Delayed Message Resend on Exchange Server 5.5

[shitomu]

Hey All.

I'm running into a strange little problem.

My Exchange 5.5 server is sending duplicates of messages, sometimes within a minute of the first sending, or sometimes days after.

I'm not sure what's going on, the logs I've looked at don't seem to help.

Thanks for the help.

 

[xmario2013]

try to restart the MTA service see if that helps

do you have anti virus like scanmail or NAV for Exchange ?

 

[shitomu]

Yes, NAV for Exchange is running on my email server.

I just restarted the server, to see if that fixes it, but what are your thoughts as to what is happening?

 

[shitomu]

A little more information:

The server reboot didn't help.

But, only duplicate messages are sent, when an initial message is sent to a mailing list- individual emails aren't being sent two or three times.

I've checked the mailing lists and there aren't any duplicate entries.