DNS Blacklist 2

As I mentioned in my last post, I needed to separate the internet connections of the mail server and local gateway of one of my clients. I did just that last Saturday. Fortunately their provider gave several IP addresses as part of the subscription plan and I used one IP for the gateway and one for the mail/web server.

Am now crossing my fingers for the results and will be monitoring the blacklist servers the whole week.

DNS Blacklist

One of my clients had their emailserver's IP blocked by several blacklist servers around the internet. Apparently, that IP has been sending spam and was detected by these blacklisters. The bungling administrator setup the server as the company's gateway AND mail server. That's me btw.

Thanks to www.dnsstuff.com I was able to determine which servers blacklisted my client.

Sites like this along with www.network-tools.com are invaluable to sysads who are troubleshooting problems like the above.