[Mailman-Users] How do I get the from address?

[Dan Mick]

It's almost always more complicated than you think.  See 
formail, for instance, or the rfc822 stuff in Python/Mailman.

I think your algorithm would be too simple.

> How do I get the address from which the mail was sent, if I want to reply
> with a confirmation request? Is it acceptable to parse the From: header
> for the following Perl regexp:
> 
> .*(<|\w)\@(>|\w)
> 
> And the resulting match would be the address to which I can reply?