mx.west.cox.net & mx.east.cox.net socket errors
A GMail user was trying to send an email to my Cox.net email address, but she got this error:
recipient has been delayed:
Message will be retried for 1 more day(s)
Technical details of temporary failure:
The recipient server did not accept our requests to connect. Learn more at https://support.google.com/mail/answer/7720
[mx.west.cox.net. 220.127.116.11: socket error]
[mx.east.cox.net. 18.104.22.168: socket error]
I have encountered a similar issue when trying to email another Cox.net user from my Cox.net email address.
It seems Cox needs more MX addresses and servers! Google has 9, but Cox only has 2.