Hi, My server only allows authenticated SMTP users to send e-mail on mail server (MailEnable Enterprise 2.0) without granting relay any IP address. This was necessary to block users from send unauthenticated mails so spammers cant exploit my server. But in this situation, Plesk cant sent admin notifications to users because it cant authenticate on mail server. Anyone knows how to allow Plesk 7.6.1 to authenticate on mail server before trying to send an e-mail? I did not find anything on configuration. Thanks for help, Adriano.