Postfix VERP HowtoPostfix VERP support Postfix versions 1.1 and later support variable envelope return path addresses on request. When VERP style delivery is requested, each recipient of a message receives a customized copy of the message, with his/her own recipient address encoded in the envelope sender address. For example, when VERP style delivery is requested, Postfix delivers mail from "owner-listname@origin"
