Subj : <> in MAIL FROM: To : All From : Robert Wolfe Date : Fri Sep 14 2018 16:50:04 So I am getting this from wcSMTP when my inbound mail scanner goes to deliver some mails: 20180914 16:09:03 (09D8) MAIL: Unknown local domain user in return path: double-bounce@winserver.org 20180914 16:09:03 (08C8) EHLO: Incoming connection: inbound.winserver.org [192.168.1.177] 20180914 16:09:03 (08C8) MAIL FROM: <>... Sender ok. How do I fix this and keep this from happening? I use the eFa appliance to filter inbound emails before it hits my WINServer system. --- Platinum Xpress/Win/WINServer v3.0pr5 * Origin: Omicron Theta (1:116/17) .