SBS, Exchange, POP3 and Anti-virus – A sticky combination

I went through a steep learning curve on the SBS 2003 Exchange POP3 connector yesterday.  One of our clients had complaints that they weren’t receiving the majority of their emails, but still receiving some.  My first thought was that their ISP had a failure, but after confirmation of that it was found that the Exchange server was successfully downloading all POP3 mailboxes from the ISP.

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Exchange server stops working

One of our clients have had a problem over recent weeks, where for no visible reason, the exchange server would just stop working.  At first they took it upon themselves to restart the server, and this would sort out the problem.  Until the next night, when the same thing would happen.

Obviously, this daily restart is not the solution to the problem.

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