Hi, we have an antivirus/antispam platform who relay incoming mails to our Postfix 2.1; then this postfix relay again to the final customer or to the maildir. For outgoing mails, the mail direction is the same, customers can send mails throught Antivirus/Antispam platform authorized by source ip or by user/password, then postfix and then internet.
So, our postfix don't need to activate SMTP authentication and here is the problem.
Some time we receive mails with sintax MAIL FROM:<...> AUTH=<> from internet and they arrive to postfix who refuse with "555 Unsupported option: AUTH=<>"
What can I do to allow this mails? Why arrive mails with AUTH=<>?
Any idea.
Thanks.
So, our postfix don't need to activate SMTP authentication and here is the problem.
Some time we receive mails with sintax MAIL FROM:<...> AUTH=<> from internet and they arrive to postfix who refuse with "555 Unsupported option: AUTH=<>"
What can I do to allow this mails? Why arrive mails with AUTH=<>?
Any idea.
Thanks.