Sam Varshavchik <[email protected]> wrote on 2010-Jun-08:
> If Courier connects to an SMTP 
> server and the remote server supports STARTTLS (gmail's does), Courier will 
> negotiate an encrypted connection by default.

Does anyone know why "smtp.gmail.com" advertises STARTTLS, but the gmail MX
servers do not?

----------------------------------------------
r...@mail:/# testmxlookup gmail.com
Domain gmail.com:
Relay: gmail-smtp-in.l.google.com, Priority: 5, Address: ::ffff:72.14.213.27
Relay: alt1.gmail-smtp-in.l.google.com, Priority: 10, Address: 
::ffff:74.125.95.27
Relay: alt2.gmail-smtp-in.l.google.com, Priority: 20, Address: 
::ffff:209.85.211.7
Relay: alt3.gmail-smtp-in.l.google.com, Priority: 30, Address: 
::ffff:209.85.229.27
Relay: alt4.gmail-smtp-in.l.google.com, Priority: 40, Address: 
::ffff:209.85.219.3
----------------------------------------------

None of these advertise STARTTLS in response to an EHLO.

So if I want to send mail securely to gmail.com, I need to put a entry in
"esmtproutes" on each courier install forcing "smtp.gmail.com" for delivery to
that domain?

TIA

Jeff Jansen

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