For the past couple of weeks, when trying to send mail, ( have been getting an intermittent fault. (I have used Thunderbird for years, and never had a problem before.) When trying to send, I sometimes get the "connected to mail.plus.net" message, then after a delay: "An error occurred with the POP3 mail server. Mail sever plus.net responded ) That's the end of the message. On some other occasions, the message appears to be sending, but sticks on about 90% and I am then advised that it couldn't be sent. However, when I check the "sent" box, the message is there, and has, in fact, gone.. When trying to poll the mailserver for new messages, I sometimes get the response that a connection could not be made.