Urgent - 500 Points!

Hi,

I run sendmail on linux (I have another thread open in this category)

I use it as a mail relay to a Microsoft Exchange Server. It worked great till some point of time. I don't know what I did exactly but now incoming mail (i.e. mail from gmx, web, hotmail, other companies...) gets to sendmail but is not delivered to the Exchange anymore!

I can:
- send mail from inside to the outside (from Exchange Server over the mailgate to the internet - relaying works here)
- send mail from one internal mail account to another
- open a telnet session from the mailgate to the Exchange Server on port 25 and send a mail

I cannot:
- receive mails from the internet because it seems as if sendmail would only queue them but not deliver them to the Exchange server anymore.

I reset all the settings I did in recent times and restarted / reooted everything....no luck

The logging info for an incoming mail
Oct 12 10:30:11 mailgate sendmail[23710]: NOQUEUE: connect from pop.gmx.de [213.165.64.20]
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: Milter (mimedefang): init success to negotiate
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: Milter: connect to filters
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: milter=mimedefang, action=connect, continue
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: --- 220 Jura ESMTP Mailserver; Tue, 12 Oct 2004 10:30:11 +0200
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: <-- HELO mail.gmx.net
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: milter=mimedefang, action=helo, continue
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: --- 250 mailgate.brueckner.de Hello pop.gmx.de [213.165.64.20], pleased to meet you
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: <-- MAIL FROM:<kurt.semba@gmx.de>
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: Milter: senders: <kurt.semba@gmx.de>
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: milter=mimedefang, action=mail, continue
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: --- 250 2.1.0 <kurt.semba@gmx.de>... Sender ok
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: <-- RCPT TO:<user.name@brueckner.de>
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: Milter: rcpts: <user.name@brueckner.de>
Oct 12 10:30:11 mailgate sendmail[23710]: i9C8UB6e023710: milter=mimedefang, action=rcpt, continue

Sendmail should now check if the recipient is ok but doesn't!? It does nothing else...

Thanks for a fast reply,
Kurt
beatboxxAsked:
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ee_ai_constructConnect With a Mentor Commented:
Question answered by asker or dialog valuable.
Closed, 500 points refunded.
ee_ai_construct (replacement part #xm34)
Community Support Admin
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beatboxxAuthor Commented:
Comment:
Seems as if the recipient lookup crashes! Seems as if sendmail couldn't work with our domain brueckner.de, although it could before!? DNS works, all pings work...

How does sendmail look up recipients?
Kurt
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jlevieCommented:
The last action logged above was a "continue" from MIMEdefang after the recipient was identified. If that's where all logging for this message ended I'd suspect a problem with MIMEdefang.

Do senders get a bounce back? If so what does it say?
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beatboxxAuthor Commented:
puhh sorry guys the problem is solved:
the internal dns server had the Exchange server' IP behind the mailgates name :)

sorry and thx again,
Kurt
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PsiCopCommented:
Cool. If you solved your own Question, then don't forget to post a (free) Question in the COmmunity Support TA (http://www.experts-exchange.com/Community_Support/) and ask that this Question be closed and your points refunded.
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