[MM3-users] Not receiving email from outlook or gmail.

From mailman web it was able to deliver the email to outlook and gmail but when replying or confirming subcription it can't reach the mailman.

This error is bounce back from outlook. Server at destination.email.com (192.10.10.10) returned '400 4.4.7 Message delayed' 1/4/2024 12:16:13 PM - Server at destination.email.com (192.10.10.10) returned '451 4.4.397 Error communicating with target host. -> 421 4.2.1 Unable to connect -> SocketTimedout: Socket error code 10060

Thanks, mARK