Undeliverable mail sent by a user with PHP mail() gets returned to nobody@hostname instead of the user. That's because the Return-Path always seems to be set to nobody@hostname no matter what headers are used in mail() to try to redirect the Return-Path. We tried Errors-To, Return-Path, &-f$sender& so far with no success.
Has anyone found a way to change the Return-Path?
Has anyone found a way to change the Return-Path?