Exchange Server 2003 Repeated E-mails
I've been struggling with a slightly strange issue on our Exchange 2003 server at work. Sometimes (but maddeningly, not always), messages sent to associates where we do not host the associates' mailboxes (i.e. mail-enabled user accounts with a primary external SMTP address) result in repeated emails sent to those people. Typically, the repeat emails are sent every 15 minutes.
There is no sign of these emails on any queues in Exchange, and the MTA check comes up as fine. Restarting the IIS Admin service seems to stop the problem, but I've had a tip-off that the issue could be connected to the antivirus software. So next time it happens, I'm going to try restarting the antivirus services, and see if that fixes it. I'm also going to look at disk access, to check that we don't have a performance issue there.
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