Arkadaşlar mail sistemimim den mail attıgımda hotmaile gitmıyor outlooktan atıyorum server üzeinden bildiğiniz gibi fakat hotmaile gitmiyor hat abuu This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address failed: SMTP error from remote mail server after MAIL FROM:&lt; &gt; SIZE=27141: host mx1. hotmail.com : 550 OU-001 (COL0-MC3-F36) Unfortunately, messages from 176.53.39.58 weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. lütfen acil yardım ne yapmam gerekiyor?