Can someone confirm tls version syntax for smtp-server?

[ceraz68]

I keep getting the below error with a specific client (Paradox IP150 alarm module) connecting to my smtp-server (version 3.5.0 on node 12.18.2) . My workaround is to use a synology SMTP relay ;-)

Error: 140063399927112:error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol:../deps/openssl/openssl/ssl/statem/statem_srvr.c:1686

I'm trying different TLS version settings on the server but not sure of the syntax (the logger doesn't show such detail). Is the below syntax correct?

Thanks

const server = new SMTPServer({
secure: true,
logger: true,
tls: {minVersion: 'TLSv1.1'},
disabledCommands: ['AUTH'],
etc....

[Raademar]

I'm also getting this issue and would love a clarification.

[niftylettuce]

Ref: #136
Ref: #122
Ref: #156