Road Runner email suddenly won't send in Thunderbird
Greetying! I have been using Thunderbird to manage my Road Runner email for years. Last month, it suddenly stopped being able to send emails. I switched to Apple Mail where it worked for a week or so, then that stopped sending as well. No problem receiving emails in either one. I am able to send and receive in Webmail but strongly prefer to use T'bird. Last week, it started working again until this morning where I get an error message:
Sending of the message failed.
An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: p-impout009.msg.pkvw.co.charter.net cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/188.8.131.52 AUP#Out-1220.
I'm using the outgoing - mail.twc.com as my default server with these settings:
Server Name: mail.twc.com
User Name: [myaccount]@nycap.rr.com
Authentication method: Password, transmitted insecurely
Connection Security: None
I've checked my SMTP setting and everything appears to be correct as well as speaking with Spectrum technical support who verified their accuracy. Super frustrating and I'd appreciate any advice from anyone who has come across this issue and successfully navigated it. Thank You!