SBS 2003
Problem Overview:
IS Admin, FTP publishing service, SMTP service , and the exchange routing service,
are intermittantly all restarting at the same time.
They continue to do so (all four services) about 51 times in the event log, over a couple of minutes, and then gives up.
Then shows these services as stopped, and exchange no longer works.
This happens a few times a day. Local and remote users of exchange are effected.
In the queue directory, a file appears in that directory, which has the same datetime stamp as when the services are restarting and then stopped.
I then delete the mail from the the exchange server queue directory and restarts the server, and all is ok for approx. 2-3 hours unitl the problem reoccurs.
I applied the patch : KB827214 to the server but has not helped
Any Ideas what might be going on its driving me nuts !

I Am also running on the server AVAST Server with Exchange plugin
VPS is 11.10.2004
File Version 0442-0