Расширенный список зарубежных постмастеров: AOL – http://postmaster.info.aol.com/ ATT – http://www.att.com/esupport/postmaster/ BellSouth – http://www.att.com/esupport/postmaster/ Charter – http://www.charter.com/customers/support.aspx Comcast – http://postmaster.comcast.net/ Cox – http://postmaster.cox.net/ Facebook – http://postmaster.facebook.com/ Frontier – http://postmaster.frontier.net/ Gmail – https://mail.google.com/support/bin/answer.py Hotmail – http://postmaster.msn.com/ RoadRunner – http://postmaster.rr.com/ United Online – http://unitedonline.net/postmaster/ USA.NET – http://postmaster.usa.net/ Yahoo! – http://postmaster.yahoo.com/