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I've looked through all the distribution (zmailer-2.99.50-s5) docs and
could not find any mention of the problem I'm encountering. I've tried
finding faqs on this with no success. I would not mind if someone could
kindly point me to a zmailer faq archive, if such a thing exists.
Here is what I get when trying to mail from one mail server (A) to
another mail server (B):
I/143736-12069: ^M<<- BDAT 987 LAST^M->> 503 5.5.2 Waiting for MAIL
command (running now, pid=13609 vtx=NULL ??, expires in 2d23h, tries=4)
Mail from server A does not get through to server B, but A can send
outside of our domain. Sending messages directly through the smtp port
from A to B works fine. Also, server B can send to server A. As far as
zmailer is concerned they are identical except for the obvious local
Looking through the smtpserver logs on server B you can see that "MAIL
From" is null, so that's most likely why B rejects messages from A.
Still trying to understand why this only happens between these two
What is baffling is that both servers were working fine until a couple
of days ago. No changes were made to zmailer, or to the servers
themselves, as far as anyone can tell.
Ideas on the actual subject are welcome. Thanks.
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