Hi
> I need a filter which triggers when a message is sent from a
> certain user to a non-local user. (That's the easy part), and
> I would like to replace every occurance of
>
> But, I am not sure what the best way to do this is?
>
> The mails are generated from Microsoft Sharepoint Portal
> Server, so they are RTF/HTML/something, but a straight
> search/replace should still work?
Go and configure MSP correctly.
It should send the correct address in the first place.
And yes, it can be configured correctly.