This happened to me last week and now today. Last week I deleted all the emails on Comcast site and all was well. Now I cannot delete all the emailas there are some that I need and cannot download using Thunderbird or Outlook. Here are the messages I get from each one. This is getting real boring. Comcast please fix your email servers?
The RETR command did not succeed. Error retrieving a message. Mail server mail.comcast.net responded: Message 45 expunged.
Task 'mail.comcast.net - Receiving' reported error (0x800CCC0F) : 'The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP).'