On 8/26/2010 5:36 PM, siefke_listen at web.de wrote: > -o smtpd_authorized_xforward_hosts=127.0.0.0/8 That's probably the problem. It needs to be the ip of the jail. A jail maps localhost addresses like 127.0.0.1 to the jail's address. So when you specify network blocks in access restrictions, filters and the like, make sure to use your jail IP rather than 127.0.0.1.