I am getting great help, and this is where I am at. Give this a try and let me know how you make out. I am using current version of imapsync ver 1.219
imapsync --host1 192.168.0.1 --user1
name@domain.com --password1 pass \
--host2 192.168.0.2 --user2
name@domain.com --password2 pass \
--noauthmd5 --syncinternaldates