e-mail rejections

By wadrules1 ·
I am currently using Exchange 2003 SP2. I have a problem with e-mails being rejected from one particular domain and only if their is more than one sentence in the e-mail from users on this domain. The following is the rejection:
Subject: Undelivered Mail Returned to Sender
Date: Thu, 31 Jan 2008 12:14:49 -0600 (CST)
From: (Mail Delivery System)

This is the Postfix program at host

I'm sorry to have to inform you that your message could not be
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The Postfix program

<>: host[999.999.999.999] said: 550 5.7.1
Requested action not taken: message refused (in reply to end of DATA command)

Now if I have the user send to one of my external addresses, I receive. Here is the kicker, if I try to forward this to exchange server it then rejects. For me not to get it rejected, I have to open the mail message, copy text to word, then copy to a new mail message and it then will be accepted by my mail server. Any help or insight would be greatly appreciated. Would this be a sender issue or my issue?


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Message Delivery - Filtering?

by LocoLobo In reply to e-mail rejections

Is it possible that you have one of the filtering options in Message Delivery turned on?

If I read your post right mail coming from an external domain is being rejected by your exchange server? I've seen the opposite but not that yet.

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Message Filtering

by wadrules1 In reply to Message Delivery - Filter ...

I have IMF turned on for my exchange server and have turned off to see if this would resolve but doesn't. Even if that did resolve, I would not want to leave it off. Any other ideas?

Most but not all messages being rejected are from remote users to said domain, using a vpn and I thought this may be an issue but some of the e-mails being rejected are directly from inside the domain.

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