Networking

One of my server is part of big network running Domino Server for Routing Mails.The server has fixed IP Address.

I am able to ping all machines from this server but not able to ping this machine from any other machine on Network.

I had tried uninstalling AV. Checked the Gateway Entry.

I had tried to connect the server directly on my L3 Switch.

I had tried to give IP Address thru DHCP server still the same problem.

Any Solution