From: Jeff Honey (jhoneypsmanagement.net)
Date: Wed Aug 16 2006 - 15:10:02 CDT

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I have a particular set of destination mail servers (seems like mostly Exchange) that dump my outbound mail conversations:

<snip>
Aug 16 13:31:38 mail postfix/qmgr[28111]: 9B10C2DE: to=<someonesomewhere.com>, relay=none, delay=433610, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with some.mail.host[10.11.12.13] while receiving the initial SMTP greeting) </snip>

Postfix seems to be dutifully following accepted practice and simply deferring the message. When I manually connect to the destination server, I HELO just fine but if I EHLO, I get unceremoniously dumped with no message, no warning. As I understand it RFC-compliant greetings are:

HELO<sp>domain<cr><lf>
Or
EHLO<sp>domain<cr><lf>

...if I EHLO with no domain I get a simple 502 response and stay connected. Strange stuff! My questions of the day are:

1 - does postfix EHLO with domain or without?
2 - can I force postfix to HELO instead of EHLO to a particular destintation

Obviously, it would be better for the destination host to correct their shortcomings but in the interim, I need to figure out a solution.

¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤
¤ Jeff Honey, Network Administrator
¤ PS America, Inc.
¤ 4426 N. Orange Blossom Trl
¤ Orlando, FL 32804
¤ 407-521-1011 voice
¤ 407-521-1007 fax
¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤

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