ContributionsMost RecentMost LikesSolutionsSending 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 85.203.32.5 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? Re: Webmail never works? And it bounces between the "appsuite" domain and this one: idm.east.cox.net/.../saml2sso Webmail never works? I'm a new Cox customer and wanting to verify that the email works before I cut over from my other ISP. After repeated trips to the Cox store I was able to confirm the correct email address but after 6 months, I have yet to receive or read any email at the "@cox.net" domain. Whenever I log into the webmail (since I won't create a reader account, like Thunderbird, until I KNOW that the account is alright), all I see is a blank screen and a continual refresh of the URL (https://myemail.cox.net/appsuite/). Doesn't matter what browser I use, doesn't matter what time of day or night, and doesn't matter that our bill is paid on time.... Can someone who has the authority to do something constructive fix this problem? Thanks in advance