Hello, I cannot send an attachment with Thunderbird. I receive the error that the connection with my SMTP google server timed out. I tried upgrading to latest version, I disabled my antivirus checking (NOD32) and prevx, no luck. I have windows 7. I tried changing the outbound port from 465 to 25 or 587, no difference. I am using IMAP on this account. I can send emails with no attachments. I tried sending a 36 kB file and the progress bar goes to 87% then gives the same time out error. before my netbook crashed, I was able to send attachments from it through the wireless, so I don't think it's a problem in my router or my ISP, though I can check if you think that might be the problem.