Can not send emails from Thunderbird
Can not send email from Thunderbird. Keep receiving the following: Sending of the message failed.
An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: cxr-obgw-5001a.stratus.cloudmark.com cmsmtp 22.214.171.124 blocked. Refer to Error Codes section at www.cox.com/.../email-error-codes.html for more information. AUP#CXDNS.