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552 Message exceeds fixed maximum message size

sonickmc asked
After reviewing all of the posts on this issue we are still not able to resolve our issue.
Users limit is set to 50mb
Receive Connector is set to 200mb
Max Header Size is set to 128kb - Changed from default 64k

A specific domain sends a message that is 13mb and exchange returns it due to the message exceeding fixed maximum message size.

This same domain can send the message to gmail and my user then sends that message to themselves at our organization and is able to receive it just fine.
From: Mygateway
To: user@externaldomain.com
Reply-To: <>
Subject: Delivery Notification <user@mydomain.net>
Date: Thu, 10 Jun 2010 11:15:57 -0500
MIME-Version: 1.0
Content-type: multipart/report;

This is a multi-part message in MIME format.

Content-Type: text/plain;
Content-Transfer-Encoding: 7bit
This is a delivery status notification, automatically generated by MTA mygateway.mydomain.net on Thu, 10 Jun 2010 11:15:57 -0500
Regarding recipient(s) : user@mydomain.net
Delivery status : Failed. Message could not be delivered to domain <mydomain.net> .Failed to accept the sender.
MTA Response :552
The original message is included as attachment.

Content-Type: message/delivery-status;
Content-Transfer-Encoding: 7bit

Reporting-MTA: dns; emailgateway.mydomain.net

Final-Recipient: rfc822;user@mydomain.net
Diagnostic-Code: smtp; 552 Message exceeds fixed maximum message size
Remote-MTA: dns; (Email Server IP)
Action: failed
Status: 5.0.0
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Top Expert 2011
Alan, just wanted to say I could build a library on usefull information I have gathered from your posts.  THANK YOU.
Alan HardistyCo-Owner
Top Expert 2011

Thanks - Time to get bookmarking : )
I have come across a similar kind of issue where we were not able to receive emails from our client
Document was 13mb(what a co-incidence)
We checked the exchange limit and made sure it was 50MB
We checked the bounce back message and it mentioned that it was more then the specified limit
After all the investigation we found the senders ISP had limit of 10MB for the emails flowing through them
Investigated bit more to find usually ISP keeps this limit and its different with each ISP

Reading at your issue I wouldn't eliminate ISP issue
Hope this information helps

Alan HardistyCo-Owner
Top Expert 2011

You will probably find that the following works:
Set-ReceiveConnector -identity "Default SERVERNAME" -maxmessagesize 50MB


Thank you for the link.  I have 2 Receive Connectors for port 25 and for some reason domain A was using one connector and gmail was using the other.  Or that is what it appears to be.  After changing the max size on the receive connector in question the mail came through.
Alan HardistyCo-Owner
Top Expert 2011

Good news - glad the link helped. There are quite a few places to set limits, so it is easy to overlook one or two : )