Hi there,

I'm readily admitting that I'm a novice with regexp.

Situation:
We need to change the sender on emails which end in domain.net but need two specific email addresses to be unchanged. So the mapping should look like this:

this.secure@domain.net = this.secure@domain.net
photocopier@domain.net = photocopier@domain.net
*@domain.net = photocopier@domain.net

I can get the "all others" to work with

/^.*@domain\.net/ photocopier@domain.net

but don't know how to put all the pieces together.

Thank you for any assistance in advance.
Michael

probably you can tell us a few words about the language you use, the environment, the regexp style and other non-important things. Probably you can post a few pieces of code too. But only if you need some help to put those pieces together.

Sorry, this is postfix on an Ubuntu 16.04 (yes I know, old kernel) server. Postfix is version 3.1.0. I think it's using pcre (php) in the background.

So in the main.cf I have:

sender_canonical_maps = regexp:/etc/postfix/sender_canonical

In the sender_canonical file, I have (currently):

/^.*@domain\.net/ photocopier@domain.net

This works just fine for changing the sender address on anything that comes in using a domain.net sender address. The issue is that if the sender is this.secure@domain.net, it gets changed to photocopier@domain.net.

That is the format of the file (as far as I can tell from reading man pages):
/reg exp/ <tab> new sender address