Re: Problem from Comcast Network to The Planet

[Brian Keefer <chort () smtps net>]

On Mar 5, 2010, at 1:33 PM, Zachary Frederick wrote:

> We have been having a problem emailing to a customer whose server is hosted by The Planet 
> (http://www.theplanet.com/). Our mail server is hosted in-house on a comcast business connection.
>
> IP address of our server is: 173.13.45.23
>
> Customers mail server is: 69.93.203.243

I can get there from Comcast Business

[chort@abydos ~]$ nc  69.93.203.243 25
220 ********************************************************************************************
ehlo smtps.net
250-securemail.insurancewebsitebuilder.com Hello smtps.net [173.11.102.7], pleased to meet you.
250-ENHANCEDSTATUSCODES
250-SIZE
250-XXXA
250-ETRN
250-XXXB
250-DSN
250-CHECKPOINT
250-8BITMIME
250-AUTH CRAM-MD5 PLAIN LOGIN DIGEST-MD5
250-XXXXXXXC
250 XXXD
quit
221 2.0.0 securemail.insurancewebsitebuilder.com closing connection

That's almost certainly a PIX/ASA with fixup enabled (like Jay said).  It's been known to cause many interoperability 
problems.  The solution is pretty simple:
no fixup protocol smtp 25

--
bk