PPP user automatically forward to 5231.xgen

Hello..

I have a weird and serious problem.

Network: Core Router> Site A & Site B

My DNS is sitting on the core router.

Problem: Site A works fine using my own DNS.

Site B when using my own DNS all users get forwarded to some site 5231.xgenxxx before their requested site loads. And the user needs to refresh the page for the site to load. If I use a public DNS it works great.

But I do not face this problem on Site A while Site A also is using my own DNS.

What could be the problem?

Thank you.

Sent from my COR-AL00 using Tapatalk

What could be the problem?

I think you answered your question…

If I use a public DNS it works great.

Yes but our dns works fine on Site A.

Sent from my COR-AL00 using Tapatalk

Are you sure that any of your clients in router 2 is not making any DNS Spoofing to your network with the same IP as Router A