We’ve done all the authentication settings, and we’re using port 25.
Has anyone experienced this SSL certificate error?
Can I be missing a certificate? Where?
It is a problem with the certificate on your mail server. A common issue is that it has a certificate for only one domain but a bunch of domains resolve to it.
Maybe google “smtp ssl cerftificate test” and find something like //email/testTo:
@pfaffman Can discourse use 25 port in smtp configuration using autenticated method? or is there some restriction??