On 10/12/2011 10:59 AM, Joel Roberts wrote:
Hi all, new to the group. Have recently setup POSTFIX as an SMTP relay
front end to an Exchange 2007 backend. Have encountered the following
issue:
I'm using POSTFIX as an SMTP fronted relay to an Exchange
<http://www.tek-tips.com/viewthread.cfm?qid=1663396&page=1> 2007
backend. The default size for attachments in POSTFIX is 10 MB. I've
set that in the configuration file to be 20 MB. When I look at
postconf -n it verifies that the limit is set to 20 MB,
(message_size_limit = 20480000). I've stopped and restarted the
postfix service, but messages are still bounced back to my Exchange
server <http://www.tek-tips.com/viewthread.cfm?qid=1663396&page=1> as
undeliverable if they exceed 10 MB in size.) The bounce-back message
users receive lists the Debian Linux / Postfix server as the server
bouncing it back for exceeding size. Is there somewhere else this
needs to be set?
The error message I get from exchange is:
This message exceeds the maximum message size allowed. Microsoft
Exchange will not try to redeliver this message for you. Please make
the message smaller -- by removing attachments, for example -- and try
sending it again, or provide the following diagnostic text to your
system administrator.
This appears to be an error from Exchange, no?
The following organization rejected your message:
{POSTFIX_SERVER.OUR_DOMAIN.com.
Thank you,
Joel Roberts
Network Administrator
