I'm having a really strange problem with a GWIA installation. GWIA is somehow holding on to old DNS information.

We're trying to send emails to a recipient system that have changed the IP address for their mail server. But GWIA is still resolving to the old IP address.

Checking with nslookup on the server, we resolve to the new address.

Restarting GWIA, or even the server does NOT HELP.

It's almost a week ago that recipient changed their system, so this is a huge problem!!