[TriLUG] outgoing mail problem on pilot

[Aaron Schrab via TriLUG]

At 02:28 +0000 05 Jun 2016, Joseph Mack NA3T via TriLUG <trilug at trilug.org> wrote:
>This is for one of the sysadmins on pilot:
>
>I just sent an e-mail to the problem report form on pilot. On pressing 
>submit I got "you have been banned from posting"

I'm hoping that this had the same root cause as the initial problem.  I 
doubt if you were actually banned.

>The original problem: I use alpine on pilot for mail.

That does sound like a pretty big problem. :)

>Just now I got a TLS error on attempting to send.

The mail server was configured with an unsupported selection of ciphers.  
This caused it to immediately hangup on connections to the smtps port, 
which is what alpine had been configured to use. For some reason 
connecting to one of the unencrypted ports and using STARTTLS to turn on 
encryption seemed to have been working. I've fixed the cipher selection, 
and verified that connections to the smtps port work again.

I've also changed the default smtp-server setting in alpine to:

mail.trilug.org/tls/user=${USER}

Switching from /ssl/ to /tls/ to switch from using the smtps port to the 
normal smtp port with STARTTLS, and removing the setting to disable 
certificate validation.