>>1. server =windows server2003 (look title up)
>>2.They receve emails by my program.
>>>What is the network on the server - is it Novell? What e-mail software they are using? Are you sending e-mails from your application?
>>>
>Are you sending e-mails with attachments? Try for the time being disable e-mail functionality in your application. It may be irrelevant, but I remember long time ago I was doing some tests (using SendMails from Nigel Coates class, if memory serves) and our Network Admin complained that my tests crashed the Network. I think we used Novell at that time.

The only problem with that is that the network crashed 3 times in the past month - he will have to disable email for quite sometime to determine if email is causing it.

I would prefer to log every email with date and time (workstation sent from, recipient, attachments if any, etc) somewhere so that he can later compare his logs (he should also be logging whenever any error occurs in his program) to the crash times and the server logs when the crash occurs...

For the email log (since it can grow if not purged regularly), he can set a system variable to turn it on or off... He may want to do that in other places as well: when large queries are run...etc...