Migration Exchange 2007 to Exchange 2013 and publish Exchange by using TMG 2010. Everything working fine. gmail and hotmail email send and receive fine but other maximum corporate site mail did not go. Show below error in queue viewer. Please help me.
LED=441 4.4.1 Error encountered while communicating with primary target iP address: "Failed to connect. Winsock error code: 10060." Attempted failover to alternate host, but that did not succeed.Either there are no alternate hosts, or delivery failed to all alternate hosts.
Md. Ramin Hossain