If that is it, Rabbit1, then reducing the DNS timeouts on your server will help me and others when it happens.

See the warnings on your DNSStuff report. Other servers will follow those very long timeouts and won't update their DNS addresses for a long time.

If I call my ISP and ask them to update, they will tell me to ask you to reduce your timeout.

Unless there is some unusual reason why they should be so long...