Create a plain text file: /etc/postfix/accepted_unauth_senders
, list all
users' email addresses which are allowed to send email without smtp
authentication. We use user email address user@example.com
for example:
user@example.com OK
Create hash db file with postmap
command:
# postmap hash:/etc/postfix/accepted_unauth_senders
Modify Postfix config file /etc/postfix/main.cf
to use this text file:
smtpd_sender_restrictions =
check_sender_access hash:/etc/postfix/accepted_unauth_senders,
[...OTHER RESTRICTIONS HERE...]
Restart/reload postfix to make it work:
# /etc/init.d/postfix restart