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. Do all IP-based anti-spam filtering upstream on system A. The Postifx SMTP client supports XFORWARD, but the downstream server will (correctly) not use that information for access control. -- Viktor.