Hi all,
My company runs a LISTSERV/LSMTP combination to send out
personalized DISTRIBUTE JOBs to certain lists. About a month ago we started
receiving complaints from a few random recipients that they were receiving
multiple copies of the same message. In fact, they received a copy of the
message 100 + times, until the four day max delivery try was reached by
LSMTP. This is very random, it probably only occurs once for every 100,000
recipients. I have verified that the receiving servers do not appear to be
running the infamous PIX SMTP Fix Up protocol, which is notorious for this.
It appears that the receiving server simply does not reply with a 250
Success after LSMTP issues the "." end of message command. Here is a sample
from the log -
17:48:09 ( 13)O opened SRIGLOBALIMPORTS.COM mail.SRIGLOBALIMPORTS.COM
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 220 sriglobalimports.com ESMTP
MDaemon 8.0.2; Thu, 23 Jun 2005 16:46:22 -0600
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) <<< EHLO list.publishingconcepts.com
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250-sriglobalimports.com Hello
list5.publishingconcepts.com, pleased to meet you
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250-ETRN
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250-AUTH=LOGIN
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250-AUTH LOGIN CRAM-MD5
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250-8BITMIME
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250 SIZE 0
17:48:09 mail.SRIGLOBALIMPORTS.COM( 13) <<< MAIL
FROM:<owner-nolist-2UWA741*kct**SRIGLOBALIMPORTS*[log in to unmask]
S.COM> BODY=8BITMIME
17:48:10 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250
<owner-nolist-2UWA741*kct**SRIGLOBALIMPORTS*[log in to unmask]
>, Sender ok
17:48:10 mail.SRIGLOBALIMPORTS.COM( 13) <<< RCPT
TO:<[log in to unmask]>
17:48:10 mail.SRIGLOBALIMPORTS.COM( 13) >>> 250 <[log in to unmask]>,
Recipient ok
17:48:10 mail.SRIGLOBALIMPORTS.COM( 13) <<< DATA
17:48:10 mail.SRIGLOBALIMPORTS.COM( 13) >>> 354 Enter mail, end with
<CRLF>.<CRLF>
17:48:11 mail.SRIGLOBALIMPORTS.COM( 13) <<< .
17:48:42 ( 13)O closed SRIGLOBALIMPORTS.COM mail.SRIGLOBALIMPORTS.COM,
WSAETIMEDOUT
You can see that LSMTP simply waits for 30 secs and never hears back. I
would normally attribute this to an over worked mail server, but I am
literally getting at least one or two complaints every other day now. Has
anyone seen this before, or has started to see more and more of this?
Thank you,
________________________________
John Traweek
Senior Account Director
PCI: the data company
Heritage Square
4835 LBJ Freeway, Suite 1100
Dallas, TX 75244
972-774-3280
972-774-3284 Fax
[log in to unmask]
We collect accurate data. We deliver powerful information.
Visit us on the web at <http://www.publishingconcepts.com/>
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