I am running the same OS and Exchange Versions as you and had experienced the same problem a few weeks ago. My problem appeared to be the amount of NDR messages in the queues caused by SPAM trying to do Directory Harvesting. I believe our server was trying to send NDR to non-existent recipients thus causing the services issue. I restarted our Exchange server and the services stayed running for awhile but outbound email from internal clients took quite long to get out. I deleted all the postmaster@xxxxxxxxxxxxx messages (without NDR) and configured our GFI MailEssentials anti-spam software to delete any messages that are trying to do Directory harvesting. Since doing this our server has been running smoothly. Hope this helps. PS - You should configure Symantec to Exclude all Exchange directories (exclude the edb and stm files as well) I have seen databased get corrupt because of the anti-virus scanning. -----Original Message----- From: Jan Mt. Pleasant [mailto:MtPleasantJ@xxxxxxxxxxxxxx] Sent: Thursday, November 17, 2005 11:06 AM To: [ExchangeList] Subject: [exchangelist] Exchange services shutting down intermittently http://www.MSExchange.org/ We're running Exchange 2000 Enterprise on a Windows 2000 server. Small office. Since Sunday last, some of our Exchange services, including WWW publishing have been shutting themselves off. The services that go down are: MS Exchange IMAP4, MSExchange Pop3, MS Exchange Routing Engine, Simple Mail Transport Protocol, World Wide Web Publishing Service. Has anyone seen this before? Any thoughts on what might be causing it? Anything to do with Symantec? Thanks. Jan Mt Pleasant Strategies for the Global Environment 2101 Wilson Blvd. Arlington, VA 22201 ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: scott.clarke@xxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx