> On Jul 2, 2020, at 11:28 AM, Silas <silas_postfix_us...@nocafe.net> wrote: > > Some local users (Unix accounts) on a machine are allowed to send emails > externally, but I want some other users (mainly administrativa accounts like > root and others) to use a notificat...@example.com account.
See http://www.postfix.org/MULTI_INSTANCE_README.html#quick which shows how to do that with smtp_generic_maps. > main.cf: > > local_header_rewrite_clients = static:all > sender_canonical_maps = regexp:/etc/postfix/sender_canonical Why regexp? Indexed files are easier to understand and manage correctly, and even do "partial" lookup keys for you... -- Viktor.