We were given responsibility a while back for a club computer. Everything was running fine until week before last. It is an SBS 2003 server installed as a virtual server and we're using the Exchange for club officers with Outlook Web Access (not POP3). The server also acts as a web server for the club domain and that is working fine.
We first noted that outgoing email que was filling up and not going out. Couldn't find a reason.
Incoming emails work; outgoing to others within the exchange work; outgoing to any external domain fails.
We can remote into it. We did so and found that we could not get to the internet from IE on the server. We also could not ping to outside addresses.
We can find NO log errors.
It looks like the DNS is not working. Trying an nslookup to any external address says it is timing out on DNS resolution. The server is using itself as a DNS. There are 3 internal IP addresses listed .12, .11., & .8 with .8 listed as the DNS server. We can ping to internal IP addresses; we can ping external IP addresses, but CANNOT ping external URL addresses (www.google.com