Hi,

On Tue, 2012-01-10 at 16:16 +0100, Luca Di Vizio wrote:

in 2.1rc3 the "director_servers" setting does not accept hostnames as documented (with ip no problems). It works correctly in 2.0.17.

The problem most likely was that v2.1 chroots the director process by default, but it did it a bit too early so hostname lookups failed. http://hg.dovecot.org/dovecot-2.1/rev/1d54d2963392 should fix it.