[wellylug] changing email from address for a daemon

[Jamie Baddeley]

Hi All,

I'm trying to get postfix to do something for me that I can't figure
out. It seems simple, but I can't see how...

All I want to do is make postfix permanently rewrite a users address in
all outgoing mail. i.e userA at domain becomes userB at domain in the from
address.

I've looked at trivial-rewrite and canonical etc etc, but I can't see
the wood for the trees.

Has anyone done this?

jamie