[Dovecot] UIDL and message migration

[Hugo Monteiro]

Hello,

I'm in the process of migrating accounts between two dovecot servers. An 
old server running ancient 1.0.15 and a new server running 1.2.15.
Account migration is going to be gradual and so i would like to use 
imapsync to move messages and subscriptions from one server to the 
other. The only problem so far is with POP users. After doing an account 
migration with imapsync, and although both servers share the same 
pop3_uidl_format = %08Xu%08Xv, the client downloads every message that 
was already on the server.

Any pointers would be very much appreciated.

Best Regards,

Hugo Monteiro.