https://www.postfix.org/postconf.5.html
- reject_sender_login_mismatch
- As of Postfix 2.1, this is an alias for "reject_authenticated_sender_login_mismatch, reject_unauthenticated_sender_login_mismatch".
- reject_authenticated_sender_login_mismatch
- Reject the request when the client is authenticated with SASL, but either the MAIL FROM address is not listed in $smtpd_sender_login_maps, or the SASL login name is not an owner for that address.
This prevents an authenticated client from using a MAIL FROM address that they do not explicitly own.
This feature is available in Postfix version 2.1 and later. - reject_unauthenticated_sender_login_mismatch
- Reject the request when SASL is enabled, the MAIL FROM address is listed in $smtpd_sender_login_maps, but the client is not authenticated with SASL.
With SASL enabled, this prevents an unauthenticated client from using any MAIL FROM address that is listed in $smtpd_sender_login_maps.
This feature is available in Postfix version 2.1 and later. - Ezt is kipróbáltam, és nem akadályozza meg azt, hogy authentikálás nélkül, feladóként egy - a szerveren - létező e-mail címet használva a szerveren más felhasználóknak levelet küldjek (például telnet-tel, ahogy korábban írtam). Vagy valami más beállítás engedélyezi ezt nálam :(