Setup: I have been working with a small network which has developed a problem. It is 2k Domain and 2 DCs. DSL connection through a Linux firewall. They have small web site, ftp, and Exchange for email. They are running DNS.
Problem: Their email was working just fine last Friday. Then about noon, they stopped receiving any email. They can send just fine, but not able to receive. Internal messages work fine. After investigating, I learned…
There are no errors in the event viewer. Everything will reslove with DNS, both internally and externally. When looking at the DNS records, internally, I notice that the MX record is not correct. The correction is made and DNS is flushed and then renewed. The exchange server has been shut down and rebooted with no effect. All of the MS Exchange Services are working and startup normally. SMTP configuration is okay and all settings are correct. In addition, they are running Norton AV and their definitions are current.
Can anyone give me some ideas on what else to look for or what else to check? Any help at this point would be apprecitated.
Michael R.