Connection to Issue

I need a solution


One of our mailservers is currently unable to connect to which prevents our cleints from sending emails to their partners and other clients.

Could you please review and whitelist

1i8O5D-001MF4-Un: []: SMTP error from remote mail server after initial connection: 501 Connection rejected by policy [7.7] 22428, please visit for more details about this error message.Connection to

I have checked the blacklist and could not find any entries for that IP.

I’d appreciate a quick response and solution.



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