Hi all.
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.
I can make that by passing "-f notificat...@example.com" to sendmail,
but I can't always do that because some programs have hardcoded sendmail
binary path and don't allow passing the -f flag, so I tried to setting
sender_canonical_maps, which didn't work.
My current setup is:
main.cf:
local_header_rewrite_clients = static:all
sender_canonical_maps = regexp:/etc/postfix/sender_canonical
/etc/postfix/sender_canonical:
/^root$/ notificat...@example.com
Some more information:
I'm relaying these emails to another Postfix SMTP server at example.com
using SASL. When a local user tries to send email with sendmail
(without -f flag), the server appends the domain name and tries to relay
using SASL. Since the user account (e.g. r...@example.com) doesn't
exist in remote server, the connection fails with the following error:
"Client host rejected: Access denied (in reply to RCPT TO command))".
It doesn't seem right to create an account on the remote side for every
local account I have in the local machine.
Any clue?
