bharathan kailath a écrit : > it is only in the From Header yahoo domain appears! >
Please do not top post. put your replies after the text you reply to. if it is the From: header, then you can't block it with postfix alone (header_checks apply to all mail, and check one header at a time). you need a content filter (or a milter). you can use spamassassin (via amavisd-new) for example.