> >
> >While it seems feasible to do this in postfix, I wanted to explore doing
> it with minimal fuss in SAm or if a FILTER or MILTER might be required.
> >
> >So far I've only found "Basic Message Tagging Options".
>
> this is not a job for SpamAssassin.
>
> Perhaps a milter application could do that - there are milter interfaces
> for
> per, python, so you can make one.
>
Indeed, only one line in mailfromd (once you have mailfromd you will start
using it for a lot more ;))
header_add ("X-XXXXXXXXXXXXXXX", "whitelisted $client_addr in
whitelist.xxxxxx.xxx.x" )
