Hello, could someone please give me plain straightforward answer or point me to URI where I can find out what is that MSA or Mail Submission Agent all about. I've been seeking net for quite some time now and I still don't have any clue what it actually does besides binding to port 587 (I am speaking of sendmail ofcourse). Thank you. -- Best regards, Bostjan Skufca system administrator Domenca d.o.o. Phone: +386 4 5835444 Fax: +386 4 5831999 http://www.domenca.com - : send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html