Import mailbox from different domain

Hi folks, Let's say that I have on dovecot the domain example.net and on MS Exchange example.com. I've tried to import a mailbox from MS Exchange to Dovecot but it fails, I've run:

dsync -Dv backup -R -u joe.doe imapc:

dsync(joe.doe@example.net): Error: imapc(192.168.0.2:993): Authentication failed: AUTHENTICATE failed.

Is there a way to submit different domains both on MS Exchange and Dovecot and to make everyone be happy :) ?

Thanks in advance

-- Sergio Belkin LPIC-2 Certified - http://www.lpi.org