Internet connection not working after new firewall install
Posted on 2005-05-08
I have a 2003 server with exchange 2003 that will not connect to the internet through internet explorer. Here is what has happened and what I have found to work. We just upgraded to a Sonic wall pro 2040 with WAN load balancing, I have a 6MB cable connection for the primary WAN and a 1GB Fractional T1 for the failover. All of the computers on the network look to the 2003 server for DNS and get on the internet without any problems and if I ping a site from the server I get the correct reply so DNS seems fine. Norton Corporate will also do updated which seems really strange. It gets better though, my exchange server receives mail but will not send mail and the stragest thing of all is that if I unplug my cable connection from the firewall so it fails over to the T1 I can get on the internet and my exchange server sends mail. When I plug my Cable connection back in the internet stops working again. I do not have to change anything on the server for this to work. It seems like a gateway problem at first but my firewall is the gateway and it works with the T1. I know that I'm spoiled but I would like to use my 6MB connection over my T1, please help.