I'm setting a webserver from home ,HP Windows 2012, using Dyndns.org for Dynamic IP resolution, everything works fine at local server however I'm getting the following message when running a test using Dnsstuff.
We were unable to connect to any of your WWW addresses listed. Users will be unable to access your site until this is resolved.
Comcast WAN IP 18.104.22.168 : connection failed
Is this issue related to the port 80 being block at the ISP?
Please need some help...
Yes a lot of residential services block the following ports 80,443,21,25. You could try a higher port, however depending on things even that might not work. There are services like Gotomypc which do work arounds.