Qmail and Comcast

Hope somebody out there is more familiar with the black arts of ESMTP than I am.

Here the deal. I have two mail servers running Qmail. One is a pretty vanilla version. The other trying to do everything under the sun.

Although both accept and send mail just fine one of them has major problems with Comcast. Their server just dumps the mail going to them or bounces mail sent from them to me. It's... strange.

So I've been digging and it looks like it has something to do with the auth method but I'm not sure why. Can anyone shed some light on this?

Here's two telnet sessions.

The one that works:
220 thisoneworks.com ESMTP
ehlo
250-thisoneworks.com
250-PIPELINING
250 8BITMIME
quit

The one that doesn't:
ESMTPdoesntwork.net
ehlo
250-doesntwork.net
250-AUTH LOGIN CRAM-MD5 PLAIN
250-AUTH=LOGIN CRAM-MD5 PLAIN
250-PIPELINING
250-STARTTLS
250 8BITMIME

Anyone want to take a shot?

Thanks,
Iggy

 

 

 

 

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