Exchange 2013/2010 – 421 4.4.2 Connection dropped due to SocketError

Hello Exchange Experts, couple of my customers have an exchange 2013 servers reported that they faced a strange issue in their exchange servers. Some of sent emails for specific domains┬ástuck in the queue shown an error as below: ‘400 4.4.7 Message delayed’ – Remote Server at┬áCustomerdomain.com (xxx.xxx.145.250) returned ‘441 4.4.1 Error encountered while communicating with …

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