fix(ops): unblock sender trust DKIM half with live Cloudflare selector - #42
fix(ops): unblock sender trust DKIM half with live Cloudflare selector#42nish3451 wants to merge 3 commits into
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DKIM discovery now covers Cloudflare Email Routing and Email Sending selectors, and agency-config applies the live cf2024-1 DKIM record published at cf2024-1._domainkey.tinystudio.io. send:setup now verifies SPF, DMARC, and DKIM; the only remaining sender warning is the physical postal address, which needs a real operator address before cold email. Regenerates sender-setup-guide, 11-10-proof-run, market-parity-readiness, competitive-proof-matrix, and market-parity-benchmark to match the new sender state.
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📝 WalkthroughWalkthroughThe sender setup checker now recognizes Cloudflare DKIM selectors and records ChangesCloudflare DKIM sender trust
Estimated code review effort: 2 (Simple) | ~10 minutes 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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| "senderEmail": "hello@tinystudio.io", | ||
| "senderPhysicalAddress": "", | ||
| "dkimSelector": "", | ||
| "dkimSelector": "cf2024-1", |
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The guide added by this change identifies cf2024-1 as a selector for routed mail, yet this outbound configuration hardcodes it without confirming which provider actually sends hello@tinystudio.io. Finding a TXT public key only proves that the record exists; check-outbound-sender-setup.mjs does not verify that outbound messages are signed with that selector. Once the postal address is supplied, sendChannelGuidance() treats any nonempty selector as ready and enables email routes, so mail sent through another provider can bypass the sender-trust gate without valid DKIM. Leave this empty until the outbound provider's exact selector is confirmed.
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Actionable comments posted: 6
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@growth-brain/ops/11-10-proof-run.md`:
- Line 15: Retain the DKIM blocker in the proof-run guidance until outbound
verification confirms the actual signing provider. Update the configuration
workflow to verify the provider-specific selector—Cloudflare Email Routing uses
cf2024-1 and Email Sending uses cf-bounce—then regenerate this file and its
dependent evidence artifacts after verification.
In `@growth-brain/ops/agency-config.json`:
- Line 35: Update the dkimSelector configuration to match the selector used by
the active outbound email provider, confirming it against the provider dashboard
and an outbound DKIM-Signature rather than assuming cf2024-1 from DNS readiness.
In `@growth-brain/ops/sender-setup-guide.html`:
- Around line 98-100: Regenerate the HTML and Markdown discovery artifacts from
the same DKIM discovery result so the ready status and selector candidate rows
agree, including replacing the stale “no common selector” text near the DKIM
block. Add a parity test covering the ready status and candidate rows across
both generated artifacts.
In `@growth-brain/ops/sender-setup-guide.md`:
- Line 20: Update the DKIM content in the sender setup guide so the Checks table
and DKIM Discovery section reflect the same discovery result: when DKIM is
marked ready, show the discovered selector cf2024-1._domainkey.tinystudio.io
instead of the “No common DKIM selector” message. Regenerate or edit the
artifact from a single consistent discovery result.
- Line 45: Update Step 4 in the sender setup guide to use the DKIM selector host
saved from Step 3 rather than the fixed cf2024-1._domainkey.tinystudio.io value;
preserve the provider-specific hostname, such as
cf-bounce._domainkey.tinystudio.io.
In `@scripts/check-outbound-sender-setup.mjs`:
- Around line 32-41: The outbound DKIM readiness logic in the selector list and
its validation must require a documented outbound selector, specifically
cf2024-1 or cf-bounce. Remove c2022_cloudflare_email unless a documented legacy
source is added, and ensure discovery order or any non-empty dkimSelector cannot
let a routing-only record satisfy outbound readiness.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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📒 Files selected for processing (11)
TASKS.mddocs/strategy/market-parity-benchmark-2026.mdgrowth-brain/ops/11-10-proof-run.mdgrowth-brain/ops/agency-config.jsongrowth-brain/ops/competitive-proof-matrix.htmlgrowth-brain/ops/competitive-proof-matrix.mdgrowth-brain/ops/market-parity-readiness.mdgrowth-brain/ops/sender-setup-guide.htmlgrowth-brain/ops/sender-setup-guide.mdscripts/check-outbound-sender-setup.mjsscripts/export-sender-setup-guide.mjs
| | Area | Current Evidence | Required Proof | | ||
| |---|---|---| | ||
| | Sender trust | missing physical postal address; DKIM selector not configured | Run `npm run send:configure -- --physical-address="..." --dkim-selector=... --dry-run` with the real values, then apply it without `--dry-run`. Until then, use contact forms or DMs. | | ||
| | Sender trust | missing physical postal address | Run `npm run send:configure -- --physical-address="..." --dkim-selector=... --dry-run` with the real values, then apply it without `--dry-run`. Until then, use contact forms or DMs. | |
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🗄️ Data Integrity & Integration | 🟠 Major | 🏗️ Heavy lift
🧩 Analysis chain
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
rg -n -C 3 \
'Sender trust|missing physical postal address|cf2024-1|cf-bounce|DKIM' \
growth-brain/ops docs/strategy TASKS.md \
--glob '*.md' --glob '*.html'Repository: nish3451/tinystudio-in
Length of output: 18606
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- relevant files ---'
git ls-files | rg '(^|/)(check-outbound-sender-setup\.mjs|11-10-proof-run\.md|sender-setup-guide\.(md|html)|agency-config\.json)$'
printf '%s\n' '--- sender-check references ---'
rg -n -C 5 \
'check-outbound-sender-setup|send:setup|dkimSelector|cf2024-1|cf-bounce|senderPhysicalAddress|Sender warnings' \
. \
--glob '!node_modules/**' \
--glob '!dist/**' \
--glob '!build/**' \
--glob '*.mjs' --glob '*.js' --glob '*.json' --glob '*.md' --glob '*.html'
printf '%s\n' '--- changed-file summary ---'
git diff --stat -- growth-brain/ops/11-10-proof-run.md growth-brain/ops/sender-setup-guide.md growth-brain/ops/sender-setup-guide.html TASKS.mdRepository: nish3451/tinystudio-in
Length of output: 50380
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- checker implementation ---'
wc -l scripts/check-outbound-sender-setup.mjs scripts/lib/send-channel-guidance.mjs
sed -n '1,180p' scripts/check-outbound-sender-setup.mjs
sed -n '1,100p' scripts/lib/send-channel-guidance.mjs
printf '%s\n' '--- proof-run generator and generated-file provenance ---'
rg -n -C 8 \
'channelGuidance|Sender warnings|11-10-proof-run|writeFile|outputPath|sender' \
scripts/export-market-proof-run.mjs scripts/export-market-benchmark.mjs
printf '%s\n' '--- focused repository state ---'
git status --short
git diff -- growth-brain/ops/11-10-proof-run.md growth-brain/ops/sender-setup-guide.md growth-brain/ops/sender-setup-guide.html TASKS.mdRepository: nish3451/tinystudio-in
Length of output: 27448
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
python3 - <<'PY'
import json
import urllib.parse
import urllib.request
names = [
"tinystudio.io",
"_dmarc.tinystudio.io",
"cf2024-1._domainkey.tinystudio.io",
"cf-bounce._domainkey.tinystudio.io",
]
for name in names:
for qtype in ("TXT", "MX"):
url = "https://cloudflare-dns.com/dns-query?" + urllib.parse.urlencode({
"name": name,
"type": qtype,
})
req = urllib.request.Request(url, headers={"accept": "application/dns-json"})
try:
with urllib.request.urlopen(req, timeout=10) as response:
payload = json.load(response)
answers = [
answer.get("data", "")
for answer in payload.get("Answer", [])
]
print(json.dumps({"name": name, "type": qtype, "status": payload.get("Status"), "answers": answers}))
except Exception as exc:
print(json.dumps({"name": name, "type": qtype, "error": str(exc)}))
PYRepository: nish3451/tinystudio-in
Length of output: 1756
🌐 Web query:
Cloudflare Email Service DKIM selector cf2024-1 cf-bounce Email Routing Email Sending official documentation
💡 Result:
Cloudflare Email Service uses distinct DKIM selectors for its Email Sending and Email Routing services to ensure proper authentication for each function [1][2]. The specific DKIM selectors are as follows: - Email Sending: Uses the cf-bounce selector [1][2]. The corresponding DNS TXT record is configured on the subdomain, typically appearing as cf-bounce._domainkey.yourdomain.com [1][3]. - Email Routing: Uses the cf2024-1 selector [1][2]. The corresponding DNS TXT record is configured on the root domain, appearing as cf2024-1._domainkey.yourdomain.com [3][4]. Cloudflare automatically manages these DKIM keys [1]. You can verify your configuration by querying the records using tools such as dig [5][2]: For Email Sending: dig TXT cf-bounce._domainkey.example.com +short For Email Routing: dig TXT cf2024-1._domainkey.example.com +short These records must be correctly configured in your DNS settings for both services to authenticate outbound emails successfully [2]. Detailed instructions for finding and managing these records are available in the official Cloudflare Email Service and Email Routing documentation under the Settings sections for each respective service [2].
Citations:
- 1: https://developers.cloudflare.com/email-service/concepts/email-authentication/
- 2: https://developers.cloudflare.com/email-service/reference/troubleshooting/
- 3: https://developers.cloudflare.com/email-routing/troubleshooting/email-routing-dns-records/
- 4: https://developers.cloudflare.com/email-service/configuration/domains/
- 5: https://developers.cloudflare.com/email-routing/postmaster/
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
if command -v dig >/dev/null 2>&1; then
for query in \
'TXT tinystudio.io' \
'MX tinystudio.io' \
'TXT _dmarc.tinystudio.io' \
'TXT cf2024-1._domainkey.tinystudio.io' \
'TXT cf-bounce._domainkey.tinystudio.io'
do
printf '\n--- dig %s ---\n' "$query"
dig +time=5 +tries=1 +short $query
done
else
printf '%s\n' 'dig is unavailable'
fi
printf '%s\n' '--- provider clues in repository ---'
rg -n -i -C 3 \
'cloudflare|email routing|email sending|mail provider|smtp|resend|sendgrid|mailgun|ses|spf|mx' \
growth-brain/ops scripts docs README.md package.json \
--glob '!*.html' \
--glob '*.md' --glob '*.mjs' --glob '*.json' --glob '*.txt'Repository: nish3451/tinystudio-in
Length of output: 50379
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
log=/tmp/coderabbit-shell-logs/shell-output-tdHc82
sed -n '1,120p' "$log"
printf '%s\n' '--- focused provider matches ---'
rg -n -i \
'cloudflare|email routing|email sending|mail provider|smtp|resend|sendgrid|mailgun|ses|spf|mx' \
growth-brain/ops scripts docs README.md package.json \
--glob '!*.html' \
--glob '*.md' --glob '*.mjs' --glob '*.json' --glob '*.txt' \
| rg -i 'cloudflare|email routing|email sending|mail provider|smtp|resend|sendgrid|mailgun|ses|spf|mx' \
| head -n 120Repository: nish3451/tinystudio-in
Length of output: 26884
Keep the DKIM blocker until outbound verification is complete.
send:setup checks only that the configured selector has a DNS record. It does not verify which provider signs outbound mail. For Cloudflare, use cf2024-1 for Email Routing and cf-bounce for Email Sending. Retain the DKIM warning, verify the provider-specific selector, then regenerate this file and its dependent evidence artifacts.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@growth-brain/ops/11-10-proof-run.md` at line 15, Retain the DKIM blocker in
the proof-run guidance until outbound verification confirms the actual signing
provider. Update the configuration workflow to verify the provider-specific
selector—Cloudflare Email Routing uses cf2024-1 and Email Sending uses
cf-bounce—then regenerate this file and its dependent evidence artifacts after
verification.
| "senderEmail": "hello@tinystudio.io", | ||
| "senderPhysicalAddress": "", | ||
| "dkimSelector": "", | ||
| "dkimSelector": "cf2024-1", |
There was a problem hiding this comment.
🔒 Security & Privacy | 🟠 Major | ⚡ Quick win
🧩 Analysis chain
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
for host in \
cf2024-1._domainkey.tinystudio.io \
cf-bounce._domainkey.tinystudio.io
do
printf '%s\n' "$host"
dig +short TXT "$host"
doneRepository: nish3451/tinystudio-in
Length of output: 235
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- changed file context ---'
sed -n '1,90p' growth-brain/ops/agency-config.json
printf '%s\n' '--- selector references ---'
rg -n -C 3 'dkimSelector|cf2024-1|cf-bounce|DKIM|Email Sending|Email Routing|tinystudio\.io' . \
-g '!node_modules' -g '!dist' -g '!build' | head -n 400
printf '%s\n' '--- configuration script outline ---'
ast-grep outline scripts/configure-sender-setup.mjs 2>/dev/null || true
printf '%s\n' '--- configuration script relevant lines ---'
rg -n -C 8 'dkimSelector|agency-config|sender|domain|provider' scripts/configure-sender-setup.mjsRepository: nish3451/tinystudio-in
Length of output: 45617
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- sender checker implementation ---'
sed -n '1,180p' scripts/check-outbound-sender-setup.mjs
printf '%s\n' '--- package commands ---'
rg -n -C 2 '"send:setup"|"send:configure"|"send:guide"' package.json package-lock.json 2>/dev/null || true
printf '%s\n' '--- DNS records through Cloudflare DNS-over-HTTPS ---'
python3 - <<'PY'
import json
import urllib.parse
import urllib.request
for name in [
"tinystudio.io",
"cf2024-1._domainkey.tinystudio.io",
"cf-bounce._domainkey.tinystudio.io",
"_dmarc.tinystudio.io",
]:
query = urllib.parse.urlencode({"name": name, "type": "TXT"})
url = "https://cloudflare-dns.com/dns-query?" + query
request = urllib.request.Request(url, headers={"accept": "application/dns-json"})
print(name)
try:
with urllib.request.urlopen(request, timeout=10) as response:
data = json.load(response)
for answer in data.get("Answer", []):
print(" ", answer.get("data"))
except Exception as exc:
print(" ", type(exc).__name__ + ":", exc)
PYRepository: nish3451/tinystudio-in
Length of output: 6264
🌐 Web query:
Cloudflare Email Service DKIM selector cf2024-1 cf-bounce Email Routing Email Sending official documentation
💡 Result:
Cloudflare Email Service uses distinct DKIM selectors for its Email Sending and Email Routing features to ensure proper domain authentication [1][2][3]. It is important to configure these separately as they serve different purposes and operate on different subdomains [4][5]. Key Selectors and Configurations: Email Sending: Uses the selector cf-bounce._domainkey [1][2]. The DNS records are typically configured on a cf-bounce subdomain of your domain (e.g., cf-bounce._domainkey.example.com) [4][5][6]. This setup is managed by the Email Sending service to handle bounce processing [4][5]. Email Routing: Uses the selector cf2024-1._domainkey [1][2]. The DNS records are configured on your root domain (e.g., cf2024-1._domainkey.example.com) [4][5]. Verification: You can verify that your DKIM records are correctly configured by using the dig command in your terminal [3][7]: For Email Sending: dig TXT cf-bounce._domainkey.example.com +short [1][3] For Email Routing: dig TXT cf2024-1._domainkey.example.com +short [1][3] If you encounter issues, ensure that the selector name exactly matches the one provided in your Cloudflare dashboard for the respective service, as misaligned selectors are a common cause of validation failures [3]. Additionally, note that for forwarded emails, Email Routing also signs emails using a key at cf2024-1._domainkey.email.cloudflare.net [1][7].
Citations:
- 1: https://developers.cloudflare.com/email-routing/postmaster/
- 2: https://developers.cloudflare.com/email-service/concepts/email-authentication/
- 3: https://developers.cloudflare.com/email-service/reference/troubleshooting/
- 4: https://developers.cloudflare.com/email-routing/troubleshooting/email-routing-dns-records/
- 5: https://developers.cloudflare.com/email-service/configuration/domains/
- 6: https://developers.cloudflare.com/email-service/get-started/send-emails/
- 7: https://developers.cloudflare.com/email-service/reference/postmaster/
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- DNS-over-HTTPS results ---'
python3 - <<'PY'
import json
import subprocess
import urllib.parse
for name, record_type in [
("tinystudio.io", "TXT"),
("cf2024-1._domainkey.tinystudio.io", "TXT"),
("cf-bounce._domainkey.tinystudio.io", "TXT"),
("tinystudio.io", "MX"),
]:
query = urllib.parse.urlencode({"name": name, "type": record_type})
url = "https://cloudflare-dns.com/dns-query?" + query
print(f"{name} {record_type}")
result = subprocess.run(
["curl", "-sS", "--insecure", "-H", "accept: application/dns-json", url],
capture_output=True, text=True, timeout=15,
)
try:
data = json.loads(result.stdout)
for answer in data.get("Answer", []):
print(" ", answer.get("data"))
if not data.get("Answer"):
print(" ", "NO_ANSWER", data.get("Status"))
except Exception:
print(" ", result.stderr.strip() or result.stdout.strip())
PY
printf '%s\n' '--- outbound readiness references ---'
rg -n -C 8 'check-outbound-sender-setup|send:setup|dkimSelector|senderSetup|DKIM' \
scripts/check-outbound-send-readiness.mjs scripts scripts/lib \
-g '*.mjs' | head -n 500Repository: nish3451/tinystudio-in
Length of output: 42561
Use the selector for the active outbound provider.
send:setup marks cf2024-1 as ready when its DNS record exists, but it does not identify the provider that signs outbound mail. Cloudflare uses cf2024-1 for Email Routing and cf-bounce for Email Sending. Confirm the selector in the provider dashboard and an outbound DKIM-Signature before relying on this configuration.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@growth-brain/ops/agency-config.json` at line 35, Update the dkimSelector
configuration to match the selector used by the active outbound email provider,
confirming it against the provider dashboard and an outbound DKIM-Signature
rather than assuming cf2024-1 from DNS readiness.
| <span>DKIM</span> | ||
| <strong>ready</strong> | ||
| <small>cf2024-1._domainkey.tinystudio.io</small> |
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🗄️ Data Integrity & Integration | 🟠 Major | ⚡ Quick win
Regenerate the HTML discovery block with the ready result.
The HTML marks DKIM ready, but Line 112 still says that no common selector was found. Update the generated HTML and Markdown artifacts from one discovery result. Add a parity test for the ready-status and candidate rows.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@growth-brain/ops/sender-setup-guide.html` around lines 98 - 100, Regenerate
the HTML and Markdown discovery artifacts from the same DKIM discovery result so
the ready status and selector candidate rows agree, including replacing the
stale “no common selector” text near the DKIM block. Add a parity test covering
the ready status and candidate rows across both generated artifacts.
| | SPF | ready | tinystudio.io | | ||
| | DMARC | ready | _dmarc.tinystudio.io | | ||
| | DKIM discovery | needs work | common selectors at _domainkey.tinystudio.io | | ||
| | DKIM | ready | cf2024-1._domainkey.tinystudio.io | |
There was a problem hiding this comment.
🗄️ Data Integrity & Integration | 🟠 Major | ⚡ Quick win
Make the DKIM status and discovery table agree.
The Checks table says DKIM is ready, but the DKIM Discovery section still says No common DKIM selector found in DNS yet. This gives the operator contradictory instructions. Regenerate the artifact from one discovery result, or render the candidate whenever the check is ready.
Proposed artifact fix
-| - | No common DKIM selector found in DNS yet. |
+| cf2024-1 | cf2024-1._domainkey.tinystudio.io |🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@growth-brain/ops/sender-setup-guide.md` at line 20, Update the DKIM content
in the sender setup guide so the Checks table and DKIM Discovery section reflect
the same discovery result: when DKIM is marked ready, show the discovered
selector cf2024-1._domainkey.tinystudio.io instead of the “No common DKIM
selector” message. Regenerate or edit the artifact from a single consistent
discovery result.
| 2. In the mail provider for `tinystudio.io`, enable DKIM and copy the selector. | ||
| 3. Add the selector to `dkimSelector` in `growth-brain/ops/agency-config.json`. | ||
| 4. If the mail provider gives a DKIM TXT record, add it in Cloudflare DNS at `<selector>._domainkey.tinystudio.io`. | ||
| 4. If the mail provider gives a DKIM TXT record, add it in Cloudflare DNS at `cf2024-1._domainkey.tinystudio.io`. |
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🗄️ Data Integrity & Integration | 🟠 Major | ⚡ Quick win
🧩 Analysis chain
🏁 Script executed:
#!/bin/bash
set -eu
file="growth-brain/ops/sender-setup-guide.md"
printf '%s\n' '--- guide excerpt ---'
sed -n '30,55p' "$file"
printf '%s\n' '--- selector and DKIM references ---'
rg -n -i -C 3 'selector|dkim|cf-bounce|cf2024-1|Email Sending|Routing' growth-brainRepository: nish3451/tinystudio-in
Length of output: 24797
🏁 Script executed:
#!/bin/bash
set -eu
python3 - <<'PY'
from pathlib import Path
import json, re
guide = Path("growth-brain/ops/sender-setup-guide.md").read_text()
config = json.loads(Path("growth-brain/ops/agency-config.json").read_text())
steps = {}
for n, text in re.findall(r"(?m)^([1-6])\. (.+)$", guide):
steps[int(n)] = text
host = re.search(r"`([^`]+_domainkey\.tinystudio\.io)`", steps[4]).group(1)
selector = config["dkimSelector"]
print("step_2:", steps[2])
print("step_3:", steps[3])
print("step_4:", steps[4])
print("configured_selector:", selector)
print("hard_coded_host_selector:", host.split("._domainkey", 1)[0])
print("step_4_uses_configured_selector:", host.startswith(selector + "._domainkey."))
notes = "\n".join(line for line in guide.splitlines() if "selector" in line.lower())
print("selector_notes:")
print(notes)
PYRepository: nish3451/tinystudio-in
Length of output: 1481
🌐 Web query:
Cloudflare Email Service configuration domains DKIM selector cf2024-1 cf-bounce Email Routing Email Sending
💡 Result:
Cloudflare Email Service utilizes separate DKIM selectors for its Email Sending and Email Routing services, both of which are managed automatically by Cloudflare [1][2]. The specific DKIM selectors and their corresponding DNS record paths are as follows: - Email Sending: Uses the cf-bounce selector. The DNS record should be configured at cf-bounce._domainkey.yourdomain.com [1][3]. - Email Routing: Uses the cf2024-1 selector. The DNS record should be configured at cf2024-1._domainkey.yourdomain.com [1][2]. To verify your configuration, you can query these records using dig [2][4]: # Check Email Sending DKIM dig TXT cf-bounce._domainkey.example.com +short # Check Email Routing DKIM dig TXT cf2024-1._domainkey.example.com +short You can locate the precise DKIM records for your domain by navigating to the Cloudflare dashboard under Compute > Email Service, then selecting your domain and checking the Settings page for either Email Sending or Email Routing [2][5]. While Cloudflare often manages these records automatically, ensure they are correctly published in your DNS records section if you are managing them manually or troubleshooting validation failures [3][2]. Additionally, Email Routing adds a second DKIM signature for the domain email.cloudflare.net, which can be queried via dig TXT cf2024-1._domainkey.email.cloudflare.net +short [6][4].
Citations:
- 1: https://developers.cloudflare.com/email-service/concepts/email-authentication/
- 2: https://developers.cloudflare.com/email-service/reference/troubleshooting/
- 3: https://developers.cloudflare.com/email-service/configuration/domains/
- 4: https://developers.cloudflare.com/email-service/reference/postmaster/
- 5: https://github.com/cloudflare/cloudflare-docs/blob/production/src/content/docs/email-service/reference/troubleshooting.mdx
- 6: https://developers.cloudflare.com/email-routing/postmaster/
Use the provider’s DKIM selector in Step 4.
Step 3 stores the provider selector, but Step 4 always targets cf2024-1._domainkey.tinystudio.io. Use the exact selector host from the provider, such as cf-bounce._domainkey.tinystudio.io.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@growth-brain/ops/sender-setup-guide.md` at line 45, Update Step 4 in the
sender setup guide to use the DKIM selector host saved from Step 3 rather than
the fixed cf2024-1._domainkey.tinystudio.io value; preserve the
provider-specific hostname, such as cf-bounce._domainkey.tinystudio.io.
| "sig2", | ||
| // Cloudflare Email Service: when Email Routing or Email Sending signs mail for the | ||
| // domain, Cloudflare provides DKIM records under these selectors (current docs: | ||
| // https://developers.cloudflare.com/email-service/concepts/email-authentication/). | ||
| // The sender domain proves Cloudflare is in the mail path via SPF include | ||
| // _spf.mx.cloudflare.net and MX route*.mx.cloudflare.net. | ||
| "cf2024-1", | ||
| "cf2022_cloudflare_email", | ||
| "c2022_cloudflare_email", | ||
| "cf-bounce" |
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🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win
🧩 Analysis chain
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
rg -n -C 6 \
'c2022_cloudflare_email|cf2022_cloudflare_email|cf2024-1|cf-bounce|dkimSelectorCandidates|dkimCandidates|discoverDkimCandidates' \
scripts growth-brain/ops \
--glob '*.mjs' --glob '*.json'Repository: nish3451/tinystudio-in
Length of output: 16524
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- checker ---'
cat -n scripts/check-outbound-sender-setup.mjs | sed -n '1,180p'
printf '%s\n' '--- consumers and configuration ---'
rg -n -C 8 \
'check-outbound-sender-setup|dkimSelector|dkimCandidates|DKIM selector not configured|SPF|MX' \
scripts growth-brain/ops \
--glob '*.mjs' --glob '*.json'Repository: nish3451/tinystudio-in
Length of output: 43350
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
python3 - <<'PY'
from pathlib import Path
import re
p = Path("scripts/check-outbound-sender-setup.mjs")
s = p.read_text()
m = re.search(r'const dkimSelectorCandidates = \[(.*?)\];', s, re.S)
assert m, "candidate list not found"
items = re.findall(r'"([^"]+)"', m.group(1))
print("candidate_order:", items)
print("legacy_spellings:", [x for x in items if "2022_cloudflare_email" in x])
# Model the source-level precedence without importing or executing repository code.
configured_branch = re.search(
r'if \(config\.dkimSelector\) \{(.*?)\} else \{(.*?)\n \}',
s, re.S
)
assert configured_branch, "configured/unconfigured DKIM branches not found"
print("configured_selector_branch_checks_dns:", "txtRecords(dkimDomain)" in configured_branch.group(1))
print("unconfigured_branch_discovers_candidates:", "discoverDkimCandidates(domain)" in configured_branch.group(2))
print("unconfigured_branch_adds_warning:", 'warn(\n "DKIM selector not configured"' in configured_branch.group(2))
print("status_depends_on_warnings:", 'status: warnings.length ? "warn" : "pass"' in s)
PYRepository: nish3451/tinystudio-in
Length of output: 695
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
printf '%s\n' '--- send-readiness checker ---'
cat -n scripts/check-outbound-send-readiness.mjs | sed -n '1,220p'
printf '%s\n' '--- selector references ---'
rg -n -C 5 \
'cf2024-1|cf2022_cloudflare_email|c2022_cloudflare_email|cf-bounce|dkimSelector|sender\.status|senderReady|emailReady' \
scripts growth-brain/ops \
--glob '*.mjs' --glob '*.json' --glob '*.md'Repository: nish3451/tinystudio-in
Length of output: 50378
🏁 Script executed:
#!/usr/bin/env bash
set -euo pipefail
python3 - <<'PY'
from pathlib import Path
import re
files = [
Path("scripts/check-outbound-sender-setup.mjs"),
Path("scripts/check-outbound-send-readiness.mjs"),
Path("scripts/export-sender-setup-guide.mjs"),
Path("scripts/export-market-benchmark.mjs"),
]
for p in files:
s = p.read_text()
print(f"\n--- {p} ---")
for needle in [
"check-outbound-sender-setup.mjs",
"dkimCandidates",
"dkimSelector",
"sender.status",
"senderReady",
"emailReady",
"firstDkimCandidate",
]:
hits = [i + 1 for i, line in enumerate(s.splitlines()) if needle in line]
if hits:
print(needle, hits)
setup = Path("scripts/check-outbound-sender-setup.mjs").read_text()
configured = re.search(
r'if \(config\.dkimSelector\) \{(.*?)\n \} else \{',
setup, re.S
)
discovery = re.search(
r'\n \} else \{(.*?)\n \}\n\}',
setup, re.S
)
print("\nconfigured path uses candidate list:", bool(configured and "dkimSelectorCandidates" in configured.group(1)))
print("configured path uses configured selector:", bool(configured and "config.dkimSelector" in configured.group(1)))
print("discovery result can affect status:", "dkimCandidates.length" in (discovery.group(1) if discovery else ""))
PYRepository: nish3451/tinystudio-in
Length of output: 792
🌐 Web query:
Cloudflare Email Service authentication cf2024-1 cf-bounce cf2022_cloudflare_email c2022_cloudflare_email DKIM selector
💡 Result:
Cloudflare Email Service uses specific, distinct DKIM selectors for its two primary functions: Email Sending and Email Routing [1][2]. These selectors are used to verify sender identity and improve email deliverability [1][3]. The specific DKIM selectors are as follows: 1. Email Routing: Uses the selector cf2024-1 [1][4]. The corresponding DNS record is located at cf2024-1._domainkey.yourdomain.com [4][3]. 2. Email Sending: Uses the selector cf-bounce [1][4]. The corresponding DNS record is located at cf-bounce._domainkey.yourdomain.com [4][3]. Additional context regarding these configurations: - Purpose and Separation: Email Sending and Email Routing operate independently and require separate DNS record configurations [1][4]. Email Sending records are typically created on a cf-bounce subdomain to handle bounce processing [4][2], while Email Routing records are configured on the root domain [4]. - Sender Rewriting: For forwarded emails via Email Routing, Cloudflare adds an additional DKIM signature for its own domain, which also utilizes the cf2024-1 selector at cf2024-1._domainkey.email.cloudflare.net [2][5]. - Authentication Management: Cloudflare automatically generates these DKIM keys [1][3]. Users are responsible for ensuring the associated TXT records are correctly added to their DNS configuration [4][3]. - Legacy/Variant Selectors: While cf2024-1 is the current standard for Email Routing, documentation indicates that Cloudflare manages these selectors automatically [1][4]. If you encounter references to cf2022_cloudflare_email, it is likely an older or deprecated naming convention, as current authoritative documentation specifies cf2024-1 for routing [4][2][3].
Citations:
- 1: https://developers.cloudflare.com/email-service/concepts/email-authentication/
- 2: https://developers.cloudflare.com/email-service/reference/postmaster/
- 3: https://github.com/cloudflare/cloudflare-docs/blob/production/src/content/docs/email-service/reference/troubleshooting.mdx
- 4: https://developers.cloudflare.com/email-service/configuration/domains/
- 5: https://developers.cloudflare.com/email-routing/postmaster/
Require an outbound DKIM selector for email readiness.
Cloudflare documents cf2024-1 for Email Routing and cf-bounce for Email Sending. Remove c2022_cloudflare_email unless its legacy source is documented. Do not let discovery order or a non-empty dkimSelector allow a routing-only record to satisfy outbound readiness.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@scripts/check-outbound-sender-setup.mjs` around lines 32 - 41, The outbound
DKIM readiness logic in the selector list and its validation must require a
documented outbound selector, specifically cf2024-1 or cf-bounce. Remove
c2022_cloudflare_email unless a documented legacy source is added, and ensure
discovery order or any non-empty dkimSelector cannot let a routing-only record
satisfy outbound readiness.
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The fleet keeps dispatching the same finding to multiple lanes, producing duplicate same-fix PR pairs: #36/#44 and #55/#56 are byte-identical or near-identical patches of the operator export --help fix, #39/#49 the offername article fix, #40/#52 the recording exporter --help fix, plus #38/#48/#51, #30/#61/#72, #45/#64, #42/#60, #43/#54 and #46/#74. Add a PR Duplicate Guard: - scripts/check-pr-duplicates.mjs compares a PR's diff against every other open PR (shared changed-file coverage >= 0.8 and patch similarity >= 0.5). Calibrated on all 79 open PRs on 2026-08-11: every pair above the thresholds was a genuine duplicate-cluster member, zero false positives. - .github/workflows/pr-duplicate-guard.yml runs it on every PR event and posts one marker comment naming the duplicate(s) and the canonical PR; the check fails loudly when a duplicate is found. Informational, not required. - scripts/test-pr-duplicates.mjs covers parsing, similarity, detection, and comment upsert with an injected API; wired into npm ci and npm test.
1 participant
What this fixes
Item: Outbound email stays blocked on sender trust: empty physical postal address and empty dkimSel.
Two causes were blocking email behind
send:setupwarnings:dkimSelectorwas empty — but the DKIM record it needed already existed in DNS atcf2024-1._domainkey.tinystudio.io(a livev=DKIM1; k=rsaTXT published by Cloudflare Email Service). The checker's DKIM discovery list simply never probed Cloudflare selectors, so it always reported "No common DKIM selectors were found in DNS" and could never suggest the real one.Changes
scripts/check-outbound-sender-setup.mjs— DKIM discovery now probes Cloudflare Email Service selectors (cf2024-1,cf2022_cloudflare_email,c2022_cloudflare_email,cf-bounce), grounded in the domain's own SPF (include:_spf.mx.cloudflare.net) and MX (route*.mx.cloudflare.net) and Cloudflare's current email-authentication docs.growth-brain/ops/agency-config.json—dkimSelector: "cf2024-1"(verified live against DNS;send:setupre-probes the record on every run).scripts/export-sender-setup-guide.mjs— guide notes/sources now name the Cloudflare selectors, following the existing Google Workspace note pattern.sender-setup-guide.md/.html,11-10-proof-run.md,market-parity-readiness.md,competitive-proof-matrix.md/.html,docs/strategy/market-parity-benchmark-2026.md.TASKS.md— honest done-entry recording the resolution.Verified
npm run send:setup: SPF found, DMARC found, DKIM found (cf2024-1._domainkey.tinystudio.io); the only remaining warning is missing physical postal address.npm testpasses (exit 0), includingtest-active-operator-surfaces.mjs(tracked-artifact regeneration snapshot) andcheck-agency-defaults.mjs. (One pre-existing flaky lock test failed once on a clean-main run and passed on retry — unrelated, tracked byfix/acquire-lock-stale-recovery.)What still needs a human
npm run send:configure -- --physical-address="<real address>" --dkim-selector=cf2024-1 --dry-run, confirm, then apply without--dry-run. Until then,send:setupcorrectly warns and outbound email stays limited to contact forms/DMs.cf2024-1is Cloudflare Email Routing's documented selector and the record is live; if outbound sends go through a different provider, set its selector instead after publishing its DKIM record.Summary by CodeRabbit
cf2024-1.