John WInther put forth on 3/6/2010 12:57 PM: > Thanks for info, I am aware of the manual and I have previus tryed to > change the myhostname to soapnut.dk, I still got the reverse dns error. > I gave me an idear to reverse resolve the ip address registred in mx, > and the reply from that test was the dns name of my internet access. > 0xbcb75b12.cpe.ge-1-1-0-1112.customer.tele.dk, when i put that in as > myhostname the reverse dns lookup reply with success.
RFC does not dictate that your forward and reverse dns names match. It does dictate that a domain name must be valid. Anything ending in .local is not valid. I'd suggest against using 0xbcb75b12.cpe.ge-1-1-0-1112.customer.tele.dk as your Postfix HELO name. Use a hostname based on one of your mail domains instead. Some sites will block SMTP servers that HELO with such a generic hostname as that above. -- Stan
