Exchange 2010 Cellopoint #550 Relaying mail to xxxis not allowed
Posted on 2014-03-04
we are using dedicated server in hosting company, we manage our exchange server,
recently we have changed the public IP.
and right now we hit one issue when we send to a domain,
Cellopoint rejected your message to the following e-mail addresses:
Cellopoint #550 Relaying mail to xxx is not allowed ##
what should i do now?