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Exchange SMTP Mail Looping Problem.

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2 replies

by tejari

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We are using exchange 2000 server with sp3 for internal mail use.the
incoming internet mails are via sun solaris its forwarding to exchange
2000 server. the outgoing Internet mails are forwarding from exchange
to sun solaris.fine.Now some mails are delivering multiple times to
user mailbox.So i checked the Logs of both server. In the exchange
server log i found that the message are stored multiple times in the
user store box.
So please help to identify this problem..
the Exchange server Log is
--------- -----------------
SMTP : Message submitted to Advanced Wueuing
SMTP : Started Message Submission to Advanced queue
SMTP : Message submitted to Categorizer
SMTP : Message delivered Locally to (User E-mail address)
SMTP store Driver : Message delivered Locally to store to (User E-mail
address)
SMTP : Message submitted to Advanced Wueuing
SMTP : Started Message Submission to Advanced queue
SMTP : Message submitted to Categorizer
SMTP : Message delivered Locally to (User E-mail address)
SMTP store Driver : Message delivered Locally to store to (User E-mail
address)
SMTP : Message submitted to Advanced Wueuing
SMTP : Started Message Submission to Advanced queue
SMTP : Message submitted to Categorizer
SMTP : Message delivered Locally to (User E-mail address)
SMTP store Driver : Message delivered Locally to store to (User E-mail
address)
...............
The Sun solaris Log is
------------------------
Feb 20 10:35:03 gatekeeper sendmail[29591]: [ID 801593 mail.info] j1K6Z2R29591: from=, size=6279, class=0, nrcpts=1,
msgid=, proto=ESMTP, daemon=Daemon0, relay=localhost [127.0.0.1]
Feb 20 10:35:03 gatekeeper sendmail[29589]: [ID 801593 mail.info] j1K6Z1C29587: to=, delay=00:00:01, xdelay=00:00:01, ma
iler=esmtpvw, pri=126059, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (j1K6Z2R29591 Message accepted for delivery)
Feb 20 11:35:03 gatekeeper sendmail[29592]: [ID 801593 mail.notice] j1K6Z2R29591: timeout waiting for input from mx2.company.com. during client
DATA status
Feb 20 11:35:03 gatekeeper sendmail[29592]: [ID 801593 mail.info] j1K6Z2R29591: to=RECEIPENT ADDRESS, delay=01:00:01, xdelay=01:00:00,
mailer=esmtp, pri=34530, relay=mx2.Company.com. [10.50.200.2], dsn=4.0.0, stat=Deferred: Connection reset by mx2.company.com.

2 replies

by liame

Do the ones that are being duplicated have anything in the cc or bcc fields and the ones not having a problem not? I'm guessing double parsing is the issue. If not, diregard this.

I know nothing about your solaris server - I presume it is running some sort of mail program. If not your isp is sending you mail as if you have a pop setup rather than smtp.

What I think is happening is that the solaris mail program (or your isp's) is looking at the message sent to a and cc'ed to b and creating a message for the two mail boxes and replicating the headers. The exchange server looks at the 2 messages and does the same hence the duplication.

How do you fix it? Well if its your isp just tell them to change the way mail is forwarded to you. If not and it is your solaris box you'd have to look into it not forwarding the full header, just the appropriate bit for each user. That may well be just a setting. Either that or set up exchange or the solaris mail program to be a pop client rather than smtp, which I've never done but would assume is possible.

by jmlemmer

Hello,

As we are facing the exact same problem as you describe, I would be really be interested to see if you have found a solution.

Thanks in advance for your reply.

Brgds,

Jean-Marie.

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