Ubuntu
thunderbird package

  1. Bug #584529
  2. Comment #36

Comment 36 for bug 584529

Revision history for this message
In , M-wada (m-wada) wrote :

(In reply to matteo sisti sette from comment #0)
> Actual results:
> "looked up gmail.com" (or whatever is the mail server domain) appears on
> the status bar and stays there for a while. Then it disappears.
> Mail is not checked, and no error message is shown.
> This happens systematically, 100% of the times.
> Then I click "get mail" again, and it ALWAYS works the second time.

This phenomenon can occur if IPv6 relevant problem exists in your environment.
- first DNS lookup(IPv6 address resolution) takes very long
  => timeout, Tb is unable to login.
- upon second DNS lookup by Tb, IPv6 address resolution is alrweady done by
  first request, then second DNS look up ends within a shor period.
This started to occur from Tb 3, because defaullt of network.dns.disableIPv6 was changef rom true to false by Tb 3.

What happens if network.dns.disableIPv6=true is set?
(restart Tb after setting change to avoid needless problems)