[IMail Forum] DNS issues...

[Gil Gomes]

We've had a few interesting DNS related issues lately.        We're running Active Directory on Windows 2003 Servers.  99% of the time, all is well.  Occassionally we seem to be pulling erroneous MX information.  When I do an nslookup type=MX from the Imail server, I get the correct information... most of the time.  The erroneous server is always another server that's located at the provider for the company in question.  I check their DNS server and can find no problems...       I even had one where we'd apparently come up with the IP of an internal POP server for earthlink, instead of one of their outward facing MX servers.  I couldn't find anything that would validate that IP address popping up.  I tend to put this all down to DNS issues out there at these companies...  But it's occurring frequently enough to make me nervous.  I thought I'd ask the group to see if this is anything you all have come across...       I've even added internal zones for a few of our customers who we've had this problem with, to insure we're firing mail off to the right MX box...  Any help would be very much appreciated...   Thanx... -Gil