Hello Guys,
Please help we are in big trouble. there is problem with External Email which suddenly Stopped to come in. we have old ex 2010 Server and i have created 2 new exchange 2013 Server.everything was working fine with old exchange server.
i wanted to remove the OLd Exchnage 2010 Server thats why i have created Some coustom Frontend connector on the Exchange 2013 for A Nagios Machine to send the Email notification to the service emails.
and even the nagios machine is in the Domain. but just all of sudden the external Emails stopped to come in. Please help me here this is really very Urgent and i am not sure how can i solve this Problem and what is causing this Issue here ,
I also have Sophos SMTP Gateway, for the there is Hub Transport Receive connector on the Old Exchnage server.
New exchnage 2013 Server has by default created Receive connectors. Please help
How can i trouble shoot this please help me.