Since I updated Thunderbird on Windows 7 Pro Dell laptop I am only able to send email from my primary email account. I have two email accounts that I use on Thunderbird. Both email accounts can receive emails just fine. I have another Windows 7 desktop computer on the same LAN and Thunderbird works fine sending and receiving the same email as on my laptop. I did not update Thunderbird on this computer. I have tried re-installing TB on my laptop three times but the problem persists. I even deleted the secondary account once before the re-install so it would not be imported back into the new install of Thunderbird, but still the secondary account can not send a email. The error message the new program gives me is this, "Connected to mymailserver.com" with the progress bar showing 100% completion. This message goes for a while till my SMTP mail server times out and I get a SMTP server time-out error message.