Oleg: > BUT I still can use AUTH LOGIN from any IP I want! smtpd_sasl_exceptions_networks What remote SMTP clients the Postfix SMTP server will not offer AUTH support to.
It works as described: Postfix does not announce AUTH support. This feature was donated to prevent certain network clients from messing up when the server announces AUTH support but the client has no login information. With smtpd_sasl_exceptions_networks, those clients would not try to authenticate and all was well. smtpd_sasl_exceptions_networks is obsoleted by smtpd_discard_ehlo_keywords and smtpd_discard_ehlo_keyword_address_maps. The latter two prevent Postfix from accepting AUTH commands. smtpd_sasl_exceptions_networks should probably be deprecated and eventually removed from documentation. Wietse