If I try to send to two certain domains(maby more will come) the mails end up in the queue, and after a certain amount of resending attempts, I get the error:
"#550 4.4.7 QUEUE.Expired; message expired ##"
When I look in the Queue Viewer, I can see the mails, and they have 2 different errors:
1. "Last Error: 450 4.5.0 No recipient succeeded"
2. "Last Error: 454 5.7.1 DXNS3 xxx.xxx.xxx.xxx: Message refused. Your host name dosen't match with your IP address: mail.me.dk"
I have looked around the web for a solution, but haven't found one, so I hope you can help me.
Thanks in advanced.