[BlueOnyx:18072] Re: Sendmail TLS problem

[Michael Stauber]

Hi Maurice,

> Why would that be a fail? The way I understand, is that port 465 has 
> been reassigned by IANA to a protocol that has nothing to do with SMTP(S).

Sure, 465/TCP for SMTPS is no longer RFC compliant, but it's sort of
asking for trouble to close both 465/TCP and 587/TCP outright if you're
running a mailserver. Which is what they did here.

I think this article explains it pretty well:
http://blog.mailgun.com/25-465-587-what-port-should-i-use/

-- 
With best regards

Michael Stauber