4 weeks ago
Starting a little more than a week ago, email that I send to different people all of whom have woh.rr.com email domains is never delivered. Four days after I send the emails, the Mail Delivery System sends me a message saying my email couldn't be delivered, and the reason Is "delivery retry timeout exceeded." I have no trouble sending email to anyone else. Only to people who use the TWC domain woh.rr.com. Also, the MX Toolbox test says the rr.com domain is broken.
3 weeks ago
My email service is provided by 1and1.com. Their tech support said that Spectrum has a disagreement with 1and1, and as a result, Spectrum is intentionally limiting the number of simultaneous emails it will deliver from 1and1 customers. So most emails from 1and1 don't ever get delivered.