[horde] SMTP auth with TLS?

[Vince LaMonica]

On Wed, 4 Oct 2006, Jan Schneider wrote:

} > Oct 03 15:13:55 HORDE [error] [imp] LOGIN authentication failure [SMTP: SMTP
} > server does no support authentication (code: 250, response: mail.example.com
} 
} Make sure to have the latest Mail and Net_SMTP packages, there was a bug in
} one of these. I experienced the same a while back.

Mail was at 1.1.10, and I did an upgrade and am now at 1.1.13. Net_SMTP is 
still 1.2.8, which is the latest. I still get the same error message. Note 
that I'm only allowing PLAIN and LOGIN authentication but because all SMTP 
AUTH requests are encrypted [TLS], no plaintext passwd is sent through. On 
an IMP host I found via google, they offer CRAM and DIGEST smtp auth, 
though not via TLS. So their EHLO repsonse is different than mine. From 
the Net_SMTP class, it appears it scans the output of the EHLO and looks 
for AUTH in the text.

However, since I'm running TLS [aka STARTTLS], the AUTH line does not show 
up in an unencrypted EHLO connection [though it should via stunnel]. 

So I guess the question is this - does IMP [or maybe better yet - the 
Net_SMTP pear extension] support SMTP AUTH over TLS? 

More background info on this can be found here:

http://archives.neohapsis.com/archives/postfix/2006-10/thread.html#163

[it's a thread i started on the postfix list between me and Sandy Drobic]

TIA!

/vjl/