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Incorrectly spelt receipants not being rejected

Hi there, we have an exchange server here that accepts mail from 4 domains.
If a receipant address does not exist it gets rejected for all domains except for one where it gets queued in
'messages queued for deferred delivery'.
I then need to manually delete these emails.
Any ideas on this.

Thanks

Sembee

Which version of Exchange?

Exchange 2000 cannot do this natively, you have to use a third party tool.
Exchange 2003 can do this natively, but it needs to be configured. http://www.amset.info/exchange/filter-unknown.asp

Simon.

tollair

ASKER

I am running exchange 2003 enterprise SP2.
4 out of the 5 domains coming in will reject unknown receipants without the above being configured.
Its just one domain thats not being rejected and queuing on the server.

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Sembee

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tollair

ASKER

I have enabled this feature, there is still no change.

Sembee

Have you enabled both parts? There is a setting in Global Settings and there is also a setting on the SMTP virtual server.
You then need to restart the SMTP virtual server.
I also strongly suggest enabling the tar pit, if you haven't already.

Then test it by telnetting to the server and attempting to send an email to a non-valid user. You should get an error back.
Don't rely on what the queues show you as that could be showing your old information. Exchange will try and resend email messages for 48 hours by default.

Simon.