Does anyone else get this message from comcast when trying to send an email? I know they will not receive Gmail (I use Thunderbird to get around that) but this is a sending problem that I have had for 6 months or more and they never seem to fix it.

An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-c1p-023412.sys.comcast.net resomta-c1p-023412.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available.

It is a real pain to keep switching to another email address every time this occurs. I can receive all email just fine but can not send. When I checked on the internet it appears to be a massive problem with them but I have no idea what email service is sending out the failed messages. It seems like it goes away for a little while every 24 hours then comes back.