On 9/6/2010 5:56 PM, Jan-Frode Myklebust wrote:
We want to get our smarthosts off the backscatterer.org lists, but still needs to let our users send from addresses not under our control, so I was thinking of maybe of forcing all users that wants to send email from not-our-addresses to sasl-authenticate and hopefully postfix can then set envelope sender = sasl-authenticated user.
I fail to see how controlling your users From: addresses will affect a backscatterer.org listing.
Or maybe set envelope sender = sasl-authenticated user *if* the sender isn't found in the smtpd_sender_login_maps.
Postfix's controls are described in http://www.postfix.org/postconf.5.html#smtpd_sender_login_maps http://www.postfix.org/postconf.5.html#reject_sender_login_mismatch and friends.
Is this feasible ?
Probably not. It would require a milter or content_filter of some type.
Looks to me as if you're working on the wrong problem. -- Noel Jones
