Connecting to mars.verizonwirelss.com [188.8.131.52] on port 25.
Error: Expected “220” Server is not accepting connections. Failed to submit mail to mars.verizonwireless.com
when enabling logging in exchange it gives the error:
Event ID: 4006
Message delivery to the host ‘184.108.40.206’ failed while delivering to the remote domain Verizonwireless.com for the folowing reason: An SMPT protocol error occurred