Hello everyone!! I am using a small business 2003 server with Microsoft exchange 2003!! Both of them are fully updated to their newest versions!! However I am having a problem!! When I am trying to send an email from a PC in our domain to a specific external server it doesn't reach and I am getting this error message:
Your message did not reach some or all of the intended recipients.
Subject: test
Sent: 2/6/2015 10:17
The following recipients cannot be reached:
*** Email address is removed for privacy *** on 2/6/2015 10:16
The recipient could not be processed because it would violate the security policy in force <ipa237.225.tellas.gr #5.7.0smtp;550 5.7.0 550 Your server IP address [my address] does not have a valid reverse
DNS entry [ipa237.225.tellas.gr].
I called my provider and asked them to make the reverse DNS of my server's IP point to the Fully qualified domain name of the Host (A) mail file of my DNS. Still I get the same message.
I tried to send an email to that address using Hotmail and it reached the destination!!! any ideas?