Mailing List SIMS@mail.stalker.com Message #14912
From: Alan Munn <amunn@msu.edu>
Subject: Re: Error 450 rejections
Date: Fri, 11 Feb 2005 14:26:10 -0500
To: SIMS Discussions <SIMS@mail.stalker.com>
At 9:03 AM -0700 2/11/05, Warren Michelsen wrote:

At 4:20 PM -0500 2/10/05, Alan Munn issued a series of ones and zeros which decoded as:
Hi, I run a mailing list using Macjordomo with SIMS as my mailer. For one user >>on the list, my outgoing messages get rejected as having an unverified sender >>address.  Although this is supposedly temporary, the user does not seem to get >>messages in a timely fashion.  Her ISP says that it a problem with SIMS.  Is >>there something I can do to fix this on my end?

Does your SIMS have an account named: mailinglist-request? It doesn't look like >it. It sounds like their server tries to establish a connection to send to >mailinglist-request@montague.lin.msu.edu before accepting mail from that >sender. It's an extreme anti-spam measure.

Yes, the account exists.  It is set to discard mail and mirrored to my account.


Here is a sample reject header (I've changed the actual addresses.)

 Failed to deliver your message to <users-address>:
 SMTP: Address rejected by host
 Host 'spamfilt-1.domain.edu.' says:
 450 <mailinglist-request@montague.lin.msu.edu>: Sender address rejected:
 unverified address: Address verification in progress


I guess it all depends on how they 'verify' the sending address.

Check your SIMS log to see what they do when you try to send to them.


Here is a sample log with real addresses except the actual user's address.  It's not clear to me that this tells me more than the rejection message, but I don't have much experience reading these.

Alan


10:48:44 4 SMTP-195(montague.lin.msu.edu) Input Line: RCPT TO:<user@umflint.edu>\r
10:48:44 4 SMTP-195(montague.lin.msu.edu) Sending 250 <user@umflint.edu> will relay\r\n
10:48:53 4 SMTP Line 205 created for umflint.edu, [S.0000017009]
10:48:53 4 SMTP-205(umflint.edu) Got 3 relay(s)
10:48:53 4 SMTP-205(umflint.edu) Looking for spamfilt-2.umflint.edu.
10:48:53 4 SMTP-205(umflint.edu) Connected to [141.216.78.16:25]
10:48:54 4 SMTP-205(umflint.edu) Input Line: 220 spamfilt-2.umflint.edu ESMTP\r
10:48:54 4 SMTP-205(umflint.edu) Sending HELO montague.lin.msu.edu\r\n
10:48:54 4 SMTP-205(umflint.edu) Input Line: 250 spamfilt-2.umflint.edu\r
10:48:54 4 SMTP-205(umflint.edu) Connected
10:48:54 4 SMTP-205(umflint.edu) [S.0000017009](0): MAIL From:<colloq-request@montague.lin.msu.edu>
10:48:54 4 SMTP-205(umflint.edu) Sending MAIL From:<colloq-request@montague.lin.msu.edu>\r\n
10:48:55 4 SMTP-212([141.216.78.16]) Input Line: EHLO spamfilt-2.umflint.edu\r
10:48:55 4 SMTP-212(spamfilt-2.umflint.edu) Looking for spamfilt-2.umflint.edu
10:48:55 4 SMTP-212(spamfilt-2.umflint.edu) Sending 250-montague.lin.msu.edu is pleased to meet you\r\n
10:48:55 4 SMTP-212(spamfilt-2.umflint.edu) Sending 250-HELP\r\n250-PIPELINING\r\n250-ETRN\r\n250 EHLO\r\n
10:48:55 4 SMTP-212(spamfilt-2.umflint.edu) Input Line: MAIL FROM:<postmaster@spamfilt-2.umflint.edu>\r
10:49:00 4 SMTP-205(umflint.edu) Input Line: 250 Ok\r
10:49:00 4 SMTP-205(umflint.edu) Sending RCPT To:<user@umflint.edu>\r\n
10:49:00 4 SMTP-205(umflint.edu) Input Line: 450 <colloq-request@montague.lin.msu.edu>: Sender address rejected: unverified address: Address verific
10:49:00 1 SYSTEM(SMTP) [S.0000017009] failed on (umflint.edu)userz. Error Code=-15004
10:49:11 4 SMTP-205(umflint.edu) Sending QUIT\r\n
10:49:11 4 SMTP-205(umflint.edu) Input Line: 221 Bye\r
10:49:11 4 SMTP-205(umflint.edu) Closing
10:49:11 4 SMTP-205(umflint.edu) Nothing read - stream closed
10:49:11 4 SMTP-205(umflint.edu) Input Stream ended
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) No relay exists for 'spamfilt-2.umflint.edu'
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Looking for spamfilt-2.umflint.edu
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Sending 250 <postmaster@spamfilt-2.umflint.edu> sender accepted\r\n
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Input Line: RCPT TO:<colloq-request@montague.lin.msu.edu>\r
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Sending 250 <colloq-request@montague.lin.msu.edu> recipient accepted\r\n
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Input Line: RSET\r
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Sending 250 SMTP state reset\r\n
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Input Line: QUIT\r
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Sending 221 montague.lin.msu.edu closing connection\r\n
10:49:25 3 SMTP-212(spamfilt-2.umflint.edu) Abort Received, reason=54
10:49:25 4 SMTP-212(spamfilt-2.umflint.edu) Closing
10:49:25 3 SMTP-212(spamfilt-2.umflint.edu) Reading Failed. Error Code=-3155. Read:



--
Alan Munn                                                   amunn@msu.edu
Department of Linguistics                                   amunn@acm.org
and Germanic, Slavic, Asian and African Languages   Fax.  +1-517-432-2736
Michigan State University, East Lansing MI 48824    Tel.  +1-517-355-7491
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