RE: SMTP Funny
From: Robert Lampkin [MSFT] (rlampkin_at_online.microsoft.com)
Date: 05/18/04
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Date: Tue, 18 May 2004 23:41:51 GMT
Is it your side issuing the "Quit" for sure?
If so can you enable logging on the firewall? On the Transport Service
under Diagnostic logging on the server you can enable logging as well? I
have not seen an issue with Exchange killing connections unless it has
third-party software installed on it that ties into the SMTP Service via
sych's in the Metabase and monitor port 25.
Robert Lampkin, MCSE: Messaging
Microsoft Exchange Support
************
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--------------------
| Content-Class: urn:content-classes:message
| From: "David Abbott" <anonymous@discussions.microsoft.com>
| Sender: "David Abbott" <anonymous@discussions.microsoft.com>
| References: <92e901c4336a$b27f65a0$a501280a@phx.gbl>
<6SkEN97MEHA.308@cpmsftngxa10.phx.gbl>
| Subject: RE: SMTP Funny
| Date: Tue, 18 May 2004 03:16:09 -0700
| Lines: 175
| Message-ID: <e80101c43cc1$23422a70$a601280a@phx.gbl>
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| Newsgroups: microsoft.public.exchange2000.connectivity
| Path: cpmsftngxa10.phx.gbl
| Xref: cpmsftngxa10.phx.gbl
microsoft.public.exchange2000.connectivity:17774
| NNTP-Posting-Host: tk2msftngxa14.phx.gbl 10.40.1.166
| X-Tomcat-NG: microsoft.public.exchange2000.connectivity
|
| Robert - have done the NetMon trace, but only got a
| confirmation of what I've shown in the SMTP logs below.The
| conversation appears to go as expected to frame 7
| (Requested mail action okay...), then frame 8 (in the non-
| working scenario) is the "Cmd: Quit, losing connection..."
| which looks to be initiated *our* end...
|
| Is that the problem? We're closing a connection for some
| non-obvious reason?
|
| Our Exchange installation was more-or-less "out of the
| box".
|
| Cheers
| >-----Original Message-----
| >The best way to narrow this down is to get a Netmon trace
| while the problem
| >is happening.
| >Start the Netmon capture and force a connection on the
| queue in question.
| >This will show you the whole conversation between the
| servers and more than
| >likely the cause.
| >
| >
| >Robert Lampkin, MCSE: Messaging
| >Microsoft Exchange Support
| >************
| >Please reply directly to the thread with any updates. You
| may receive this
| >email notification before you are able to view my reply
| in the newsgroup.
| >Please do not send email directly to this alias. This
| alias is for
| >newsgroup purposes only.
| >This posting is provided "AS IS" with no warranties, and
| confers no rights.
| >--------------------
| >| Content-Class: urn:content-classes:message
| >| From: "David Abbott" <davidabbott@churchinwales.org.uk>
| >| Sender: "David Abbott"
| <davidabbott@churchinwales.org.uk>
| >| Subject: SMTP Funny
| >| Date: Thu, 6 May 2004 06:04:42 -0700
| >| Lines: 87
| >| Message-ID: <92e901c4336a$b27f65a0$a501280a@phx.gbl>
| >| MIME-Version: 1.0
| >| Content-Type: text/plain;
| >| charset="iso-8859-1"
| >| Content-Transfer-Encoding: 7bit
| >| X-Newsreader: Microsoft CDO for Windows 2000
| >| X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300
| >| Thread-Index: AcQzarJ/wOI8xlz3Sl2ZVx2TdNNsug==
| >| Newsgroups: microsoft.public.exchange2000.connectivity
| >| Path: cpmsftngxa10.phx.gbl
| >| Xref: cpmsftngxa10.phx.gbl
| >microsoft.public.exchange2000.connectivity:17656
| >| NNTP-Posting-Host: tk2msftngxa13.phx.gbl 10.40.1.165
| >| X-Tomcat-NG: microsoft.public.exchange2000.connectivity
| >|
| >| First up - apologies if this has already been
| >| discussed/solved in this forum :-)
| >|
| >| I have come up against a really odd SMTP (apparently)
| >| queuing problem to one or two sites only out of the
| >| hundreds we contact daily. What appears to happen is
| that
| >| a user sends a message to one of these sites, and the
| >| message just sits in the outgoing queue on a retry
| status.
| >| The SMTP log records the following in such a case
| (names
| >| and IP addresses have been changed to protect the
| >| innocent):
| >|
| >| 2004-02-09 11:16:16 1.2.3.4 OutboundConnectionResponse -
| -
| >| 220+My+Server 0 46 0 1343
| >| 2004-02-09 11:16:16 1.2.3.4 OutboundConnectionCommand -
| >| EHLO my.org.uk 0 4 0 1343
| >| 2004-02-09 11:16:16 1.2.3.4 OutboundConnectionResponse -
| -
| >| 250-Requested+mail+action+okay,+completed 0 41 0 1437
| >| 2004-02-09 11:16:16 1.2.3.4 OutboundConnectionCommand -
| >| QUIT - 0 4 0 1437
| >| 2004-02-09 11:16:16 1.2.3.4 OutboundConnectionResponse -
| -
| >| 221+2.0.0+other.site.org+closing 0 28 0 1531
| >|
| >| If *another* message is sent to the same site, the next
| >| time the queue connects the *first* message is sent and
| >| the later message now sits in this queue! The
| successful
| >| transmission records this in the SMTP log:
| >|
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 220+My+Server 0 46 0 1344
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionCommand -
| >| EHLO my.org.uk 0 4 0 1344
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 250-Requested+mail+action+okay,+completed 0 41 0 1437
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionCommand -
| >| MAIL FROM:<davidabbott@my.org.uk>+SIZE=633 0 4 0 1437
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 250+2.0.0+davidabbott@my.org.uk+OK 0 45 0 1531
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionCommand -
| >| RCPT TO:<receiver@other.site.org> 0 4 0 1531
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 250+2.0.0+receiver@other.site.org+OK 0 39 0 1625
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionCommand -
| >| DATA - 0 4 0 1625
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 354+Ready+for+data 0 18 0 1719
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 250+2.0.0+Message+received+OK 0 29 0 2062
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionCommand -
| >| QUIT - 0 4 0 2062
| >| 2004-02-09 11:16:02 1.2.3.4 OutboundConnectionResponse -
| -
| >| 221+2.0.0+other.site.org+closing 0 28 0 2172
| >|
| >| It appears that to these odd sites, if there are N
| >| messages in the queue, N-1 get sent, and 1 is always
| left
| >| hanging around.
| >|
| >| I've contacted the administrators of one of these
| sites,
| >| and they're as mystified as I am. I've tried to search
| the
| >| Internet for similar cases but have drawn a blank so
| far,
| >| one of the problems being I'm not really sure whether
| the
| >| problem's in Exchange, the DNS, our site or the
| receiving
| >| site, or indeed what the fundamental underlying problem
| >| actually is!
| >|
| >| One suggestion I have had was to telnet into the other
| >| site and initiate an SMTP exchange manually and see
| what
| >| the responses were - except that in the interests of
| >| security the other site had blocked telnet access...
| >|
| >| I've told our users in the interim to send another
| message
| >| a minute or so after the first one
| >| to "anyone@other.site.org" which I can then use the
| >| Exchange System Manager to delete from the queues. This
| >| seems to work though it does mean we have to keep an
| eye
| >| on the queues more often than we normally would.
| >|
| >| Is there any light you can shed on this oddness? Is it
| a
| >| problem with our installation, or a problem at the
| >| receiving site?
| >|
| >| Please either reply with any hints to this forum, or
| >| direct to me at davidabbott@churchinwales.org.uk
| >|
| >| Thanks
| >|
| >|
| >|
| >
| >.
| >
|
- Next message: allen: "Need help with SMTP connectors please"
- Previous message: Marina Roos [SBS-MVP]: "Re: Can send mail outside network but not receive"
- In reply to: David Abbott: "RE: SMTP Funny"
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- Reply: anonymous_at_discussions.microsoft.com: "RE: SMTP Funny"
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