Emails larger than 50K between Exchange 2003 servers remain queued

Emails larger than 50K between Exchange 2003 servers remain queued

Post by trmb » Sat, 09 Oct 2004 08:07:26



I have a problem where internal emails, between exchange 2003 servers,
which are larger than 50K, remain queued and eventually timeout due to
exceeding the retry and timeout period. Has anyone experienced this problem
or has a resolution.
There are 5 Exchange servers in the network and the MAPI client is
Outlook 2003.
Any help will be appreciated
trmbr
 
 
 

Emails larger than 50K between Exchange 2003 servers remain queued

Post by darin » Fri, 31 Dec 2004 02:41:04

Hi,
It doesn't sound like a configuration size limitation otherwise you would
immediately recieve an NDR indicating you'd exceeded the system size
limiation. Instead it sounds to me like a possible network issue. Are the
two servers in question on the same physical subnet or is there a
routing/switching etc device in between. It could possible be a case of a
black hole router where the TCP packet size exceeds the routers capability
but the router fails to tell the sender to fragment the packet. Check out
"159211 Diagnoses and Treatment of Black Hole Routers
http://support.microsoft.com/?id=159211" for information on how to test
for this. I'm curious if you also have problems copying large files or
ftp'ing between the two servers.

For more information on why messages are queuing, turn up
MSExchangeTransport diagnostic logging to max for all categories and resend
the message. Also when the message sits in the queue look at the bottom of
the Exchange 2003 queue viewer for diagnostic information on why the
message can't be send. A netmon trace may be needed to see what's going on
over the network depending on what you find as far as the diagnostic codes
that are returned.

Darin Roulston
Microsoft
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--------------------
From: "trmbr" < XXXX@XXXXX.COM >
Newsgroups: microsoft.public.exchange2000.transport
Subject: Emails larger than 50K between Exchange 2003 servers remain queued
Date: Fri, 8 Oct 2004 09:07:26 +1000
Organization: Unisys - Roseville, MN
Lines: 10
Message-ID: <ck4i31$2kus$ XXXX@XXXXX.COM >
X-Trace: si05.rsvl.unisys.com 1097190305 87004 129.223.61.19 (7 Oct 2004
23:05:05 GMT)
X-Complaints-To: XXXX@XXXXX.COM
NNTP-Posting-Date: 7 Oct 2004 23:05:05 GMT
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.3790.181
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.181
Path:
cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!newsfeed00.sul.t-online.de!t-onlin
e.de!news-lei1.dfn.de!news-fra1.dfn.de!news2.telebyte.nl!news-out.visi.com!p
etbe.visi.com!bbnews1.unisys.com!si05!not-for-mail
Xref: cpmsftngxa06.phx.gbl microsoft.public.exchange2000.transport:6661
X-Tomcat-NG: microsoft.public.exchange2000.transport

I have a problem where internal emails, between exchange 2003 servers,
which are larger than 50K, remain queued and eventually timeout due to
exceeding the retry and timeout period. Has anyone experienced this problem
or has a resolution.
There are 5 Exchange servers in the network and the MAPI client is
Outlook 2003.
Any help will be appreciated
trmbr



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\viewkind4\uc1\pard\f0\fs20 Hi,
\par It doesn't sound like a configuration size limitation otherwise you would immediately recieve an NDR indicating you'd exceeded the system size limiation. Instead it sounds to me like a possible network issue. Are the two servers in question on the same physical subnet or is there a routing/switching etc device in between. It could possible be a case of a black hole router where the TCP packet si