Read the forum guidelines
Like many people, I use gmail exclusively to send and receive all of my cox emails. It is configured correctly with the right passwords, TLS, ports, etc (I have confirmed with Cox). Gmail dutifully grabs all of my Cox emails, etc. All of a sudden, however, while I can still RECEIVE all cox emails at gmail, SOME (not all) of my OUTGOING emails come back with the following error message. I am out of settings to try. If you have a fix for this, please let me know. Cox blames it on gmail.
The response from the remote server was:
554 cxr-obgw-6002a.stratus.cloudmark.com cmsmtp 22.214.171.124 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html for more information. AUP#CXBL
Minnie L said:126.96.36.199
Looks like one of Gmail's server is blacklisted with SORBS. Most email providers don't use SORBS for their history of false negatives, but it looks like Cox's does. The entry has been active since April 29th. Do you run any mailing lists by any chance?
Thank you so much for helping. I don't run any mailing lists from gmail, although I do use the cox email address for mailing lists from mailchimp. I'm not familiar with SORBS. I'm not married to gmail and would be willing to change to some other equally user friendly web based email. If there isn't any way to solve the gmail problem, would you suggest outlook? Or? Thanks again.