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I have a domain that is hosted in my office with a barracuda and an exchange server.

Most other domains/offices can send mail to my domain without an issue, but when I try to send a message from my gmail account I receive:

From Mail Delivery Subsystem <mailer-daemon@googlemail.com>
to mygmail@gmail.com
date Tue, Sep 21, 2010 at 11:25 AM
subject Delivery Status Notification (Failure)

hide details 11:25 AM (5 minutes ago)

Delivery to the following recipient failed permanently:

    testaddress@mydomain.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain.
We recommend contacting the other email provider for further information about the
cause of this error. 

The error that the other server returned was: 550 550 #5.1.0 Address rejected
testaddress@mydomain.com (state 14).

A sample log from another server sending

SMTP -> FROM SERVER:
220 *********************************************************0******0***
SMTP -> FROM SERVER: 
500 Syntax error, command unrecognized
SMTP -> ERROR: EHLO not accepted from server: 500 Syntax error, command unrecognized

SMTP -> FROM SERVER: 
250 barracuda.mydomain.com Hello clover.wormly.com [66.228.123.50], pleased to meet you
MAIL FROM: otheraddress@otherdomain.com
SMTP -> FROM SERVER:
250 Ok
RCPT TO: testaddress@mydomain.com
SMTP -> FROM SERVER:
250 Ok
Sending Mail Message Body...
SMTP -> FROM SERVER:
354 Start mail input; end with .
SMTP -> FROM SERVER:
250 Ok: queued as F0C0B257E359
Message completed successfully.
share|improve this question
    
If real domains/emails are required to help me out i'll gladly provide –  Ben Reisner Sep 21 '10 at 15:35
1  
It would help to see the log from a failed gmail delivery. –  Chris S Sep 21 '10 at 15:41

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