I want to restrict my postfix system. Exactly I will that my postfix allow to send mails only to allowed user, all other mails should be bounced.

For example:

This Mails should be send:

[email protected] [email protected] [email protected]

All other Mails should not sended, for Exaple

[email protected] [email protected]

etc.

I tried, the following settings, but it doesn´t work:

smtpd_reject_unlisted_sender = yes smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/valid_recipients reject_unlisted_sender reject_unknown_recipient_domain reject

Have you any idea how to handle it?

BR Marcus