Sending Email Errors
Using Thunderbird email with no problems for years. For the past three days every email sent gets this pop-up:
An error occurred while sending mail: The mail server sent an incorrect greeting: cxr-obgw-5001a.stratus.cloudmark.com cmsmtp 184.108.40.206 blocked. Refer to Error Codes section at www.cox.com/.../email-error-codes.html for more information. AUP#CXDNS.
Tracking the "error codes" says that there is an issue with the connecting IP address Domain Name System (DNS). To resolve it, I am advised that "the Reverse DNS (rDNS) lookup for your IP address is failing" and that I should "confirm the IP address that sends your email."
The IP address is controlled by Cox... The DNS is controlled by Cox... umm... hello? What's going on at your end that I can't send email?