[Announce-f2f] Undelivered Mail Returned to Sender

This is the Postfix program at host backup-mx.post.tele.dk. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to <postmaster> If you do so, please include this problem report. You can delete your own text from the attached returned message. The Postfix program <announce-development-unsubscribe@openoces.org>: connect to openoces.org.certifikat.dk[62.243.75.171]: Connection refused