Thanks Mark. I upgraded the OS to 2003 and applied SP1 to exchange - so far so good. ________________________________ From: Shevill, Mark M SITI-ITIBCE22 [mailto:Mark.Shevill@xxxxxxxxx] Sent: Thursday, May 20, 2004 11:07 AM To: [ExchangeList] Subject: [exchangelist] RE: A little help http://www.MSExchange.org/ I have seen this before and found it to be the version of the routing engine dll files. If the SP3 is installed without the post SP3 hotfix April edition then you may see this occur. This has mainly occurred with the MTAroute dll since when a mail comes from 5.5 it uses the MTA to lookup the address. In E2K the route is looked up as the mail leaves the outbox, which is why sometimes you see it being delayed there. However, with a message that originates from 5.5 then the route is looked up on each hop. This is where the MTAroute.dll file comes into play. Once the message has been through the categorizer and so drops into the post categorization phase it takes one of two paths. If it originates from 5.5 then it will go via the MTAroute.dll if its a 2000 / 2003 then it will utilise the REAPI.dll and be assigned delivery either to local or remote queue. The chances are this is where you may be experiencing your fault. You may also look through ESM and see some of these messages stuck in the waiting to be routed queue. Hope this helps. Mark Shevill IMG Messaging Technical Lead Shell Information Technology International Limited Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom Tel: +44 161 435 8709 Fax: +44 161 933 3502 Other Tel: +44 7932 625510 Email: Mark.Shevill@xxxxxxxxx Internet: http://www.shell.com <http://www.shell.com/> ________________________________ From: Matt Neuherz [mailto:mneuherz@xxxxxxxxxxxxx] Sent: 20 May 2004 12:35 To: [ExchangeList] Subject: [exchangelist] A little help http://www.MSExchange.org/ All, We have had this happen once or twice and I'd like to get an idea what causes the problem. One of my users complained of not receiving an email. When we track the message it has failed on the advanced queue. Could somebody shed some light on this? We are running exchange 2003 standard on Windows 2000 Server with all patches and SPs. Thanks! Matt Matt Neuherz IS Supervisor Tigerpoly Manufacturing, Inc. 614-871-0045 614-778-0506(cell) ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------