We moved our DNS servers several weeks ago, but apparently one of the OpenDNS servers had the wrong information cached. This was rectified a couple of days ago, which is why we are seeing these problems today.  Now, there are several senders that still have bad DNS information cached.  If you are not receiving messages from some senders, be sure to notify them that they need to update their DNS cache.

Here is how the sender can find out if their cache is bad:

The sender’s system administrator needs to do a lookup on their mail server to see what IP address they’re getting for our gateway. Additionally, it would be helpful if they could get us the nameserver records they’re seeing for ijnet.net as well.

Examples:

On windows:

nslookup -type=a g1.ijnet.net
nslookup -type=ns ijnet.net

On linux:

dig g1.ijnet.net a
dig ijnet.net ns

Our correct IP’s are:

MF1 – 216.246.89.41

MF2 – 216.246.89.42

G1 – 216.246.89.40

G2 – 216.246.89.37

As always, if you have any questions, feel free to contact us at support@purity.net.

Thank you for choosing Purity Networks.

This entry was posted on Tuesday, August 25th, 2009 at 2:20 pm and is filed under General. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.