My Company has a report server that generates event reports for our customers, and some prefer that they receive their report in the form of SMS on their cellphone. For the past couple weeks customers with At&t as their carrier have stopped receiving messages. A talk with At&t confirms that the messages aren’t getting filtered as spam and dropped because the reverse look up is failing. An nslookup points me to our exchange servers internal IP. I’m assuming I need to update our reverse look up record.
Our report server uses Outlook express that’s connected to Exchange 2003 sitting behind an Astaro firewall. The public IP we have assigned for exchange is 123.456.7.8 (changed for the sake of example) and internally 192.168.1.4 (also changed)
Thanks in advance as it will be a huge relief to have this issue resolved.
-Erik