Zitat von Joel Roberts <joel.robe...@pinkardcc.com>:
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.The following organization rejected your message: {POSTFIX_SERVER.OUR_DOMAIN.com.
Have a look in the Postfix logfile most of time /var/log/mail or something like that to find out what has happened. Also a "telnet <IP-Postfix-Server> 25" with "EHLO test" should result in announcing the size which is accepted by Postfix.
Regards Andreas
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