On Mon, May 25, 2015 at 12:21:18AM +0000, Viktor Dukhovni wrote: > On Mon, May 25, 2015 at 01:28:09AM +0200, furio ercolessi wrote: > > > Now, I would like to add the XCLIENT facility to do some > > antispam testing on B, using the original IPs that > > connected to A. So I put A's IP address in > > smtpd_authorized_xclient_hosts in the B's config, > > and verified that B advertises XCLIENT to A: > > There is no XCLIENT support in the Postfix SMTP client.
Ah. Well, this certainly explains my observations.. > Do all IP-based anti-spam filtering upstream on system A. As system B is a testbed for antispam solutions/methods, doing so would defeat the purpose of the whole project.. The spam is the useful signal here. > The Postifx SMTP client supports XFORWARD, but the downstream server > will (correctly) not use that information for access control. Then it would not be good for us. I guess we will have to look elsewhere for the A side then (qpsmtpd ? nginx ?). Thanks! furio ercolessi
