I am getting several error messages from my Thunderbird account, the main one is: "Error with account ........@swbell.net The POP3 mail server (inbound .att.net) does not support UIDL or XTND, which are required to implement the 'Leave on Server', 'Maximum Message Size' or 'Fetch Headers Only' options. To download your mail, turn off these options in the server settings for your mail server in the Account Settings Window." In the Account Settings Window I could find no mention of UIDL or XTND. So I changed the Leave on Server selection, a big mistake. When did get a download it downloaded 80,000 emails! Another download was about 5,000 emails. I have not had any downloads from the server in 3 days. HELP