Exchange 2000 resends some emails after server restart

[Madcowz]

Hi,

I am running an Exchange 2000 server. Every time I reboot the server, when it comes back up, it redelivers several old messages that had already been delivered. There doesn't seem to be any pattern to it, except I think that the messages that are resent only go back as far as the previous reboot. However, only a few are redelivered (I would say 20 or so maybe, out of many thousands that had been delivered in that time period).

thanks for your help.

 

[Marcs41]

I don't really know why that would be, unless they are being processed during reboot or got stuck because of a communication failure at the sending time, an ACK error or so.

But, what I do wonder about, how many times do you reboot the server (per week/month/...) that this is such an issue?

Marc
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[Madcowz]

thanks for your reply Marc,

the simple way round this is to remove these offending messages from Mailroot/vsi 1/Queue before a reboot, which we don't do often anyway....

BUT

I want to know why this is happening, what causes it and how to resolve the issue. I'm not a great fan of Exchange as it is, having come from a Linux background, and issues like this which are not mentioned in any Microsoft technotes or guides just annoy me even more.



thanks.

 

[Madcowz]

I have read somewhere that this can be caused by either AV software or backup software locking the file when Exchange tries to delete it after sending.

Exchange then thinks it has been deleted and everytime it is restarfted, it will resnd the email.

/Mad

 

[kmcferrin]

We used to see that occasionally at my former employer. I have no idea what caused it, but seeing as we had about 120 Exchange servers worldwide, tracking it down was going to be more annoying that a few users getting duplicates.