Matus UHLAR - fantomas:
> note that this is mentioned in reject_sender_login_mismatch:
> MAIL FROM address,"

         reject_sender_login_mismatch
              Reject the request when  $smtpd_sender_login_maps  specifies  an
              owner  for  the  MAIL FROM address, but the client is not (SASL)
              logged in as that MAIL FROM address owner; or when the client is
              (SASL) logged in, but the client login name doesn't own the MAIL
              FROM address according to $smtpd_sender_login_maps.

> and I can't see the difference between this and

       reject_known_sender_login_mismatch
              Apply the reject_sender_login_mismatch restriction only to  MAIL
              FROM addresses that are known in $smtpd_sender_login_maps.

The user can specify any MAIL FROM address that does not match
smtpd_sender_login_match.

As for rejecting 'local' sender addresses on SMTP servers that do
not enable AUTH, would it be simpler to reject local sender addresses?

        Wietse

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