Comment 171 for bug 1215882

After giving up Seamonkey, I've taken my backed up data and installed Thunderbird. But the same problem is still there. I thought the greater Thunderbird popularity would be enough to prompt the community to fix this problem.
I've alto tried to Google some possible solution and ended up in an interesting web page with some workarounds which did not work in my case, though:
http://kb.mozillazine.org/Cannot_send_mail