My wife sent me email (yes she sends me email even though she is in the next room) asking for help with a rejected message. She was trying to send to a hotmail.com address; since my domain is hosted on Google for domains, the rejection message was from the gmail postmaster. The error message was:
Technical details of permanent failure: PERM_FAILURE: Gmail tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 SC-004 Mail rejected by Windows Live Hotmail for policy reasons. A block has been placed against your IP address because we have received complaints concerning mail coming from that IP address. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, we recommend enrolling in our Junk E-Mail Reporting Program (JMRP), a free program intended to help senders remove unwanted recipients from their e-mail list: http://postmaster.live.com (state 13).
So basically this means that Hotmail is rejecting all email from Gmail. Wow! This is going to be a huge mess. After a bit of searching, I found that my wife wasn’t the only person having problems. In the comments of a year old post, I found 2 references to this issue.
I hope that Microsoft and Google can work out their differences quickly as both are major email providers and the rejecting of email is going to confuse a lot of novice people and piss off even more.