Hi Wietse, Thanks for the quick reply. Typically, I could update the mynetworks line to main.cf stating: mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 openrelay.customer.com:25
and keep the line within the sender_dependent_relayhost_map. Did I get you right? Emmanuel On 22.10.18, 16:11, "Wietse Venema" <owner-postfix-us...@postfix.org on behalf of wie...@porcupine.org> wrote: permit_mynetworks