DNS resolution sometimes fails
Originally created by Tails on #5801 (Redmine)
While running the 0.15 test suite, it happened that Claws Mail could not
connect to a mail server. It was clearly DNS related: running
host mail.example.com also fails, but
host mail.example.com 127.0.0.2
succeeds. After the second command claws is happy due to the DNS cache.
I guess we have a serious regression from
only affects "DNS leaks", i.e. when the system resolver (Tor) is
used. Urgh. Oh and
tor-resolve mail.example.com works just fine.
Next thing to do: test if that’s still the case.
If it is, perhaps we could simply get some caching DNS resolver back (and maybe pick unbound this time).
It seems than only non-SOCKS applications are affected.