update Sntt: migrating mailboxes to Domino R8.5 from Linux

Update: 26th Febraury 2009
I found out that I needed to include some additional switches when running imapsync tool:
--skipheader '^X-|^Content' --skipsize
Without those switches, each time I run the tool I get all masseges from the source mailbox again and again... Lotus Domino some extra header lines to the incoming message.
End update


I recently had to chance to migrate mailboxes from Linux (Suse) to a brand-new Lotus Domino 8.5 on Linux. On the Linux side there was Dovecot, a nice IMAP (and POP3) server.

Gosh, on the source server there were several mailboxes over 1GB size, several nested folders ...

Ok, I decided not using Outlook Express/Thunderbird clients to map the two IMAP accounts AND drag&drop folders from source to destination (Domino) accounts. No way! ;-)

I google the Internet and found a utility to move/sync between any two IMAP accounts:
imapsync

Some features:

• it's free
  
• it's a Perl script that can be run on several OS
• it can sync OR move messages between two IMAP accounts
  
• it works with several IMAP servers, including Domino
  
• it takes care of nested folders
  

Using Lotus Domino as destination IMAP server I faced some issues:

• messages transfered on Domino had wrong date, not message original date:
  I used the imapsync switch --syncinternaldates
  
  
• nested folders could not be created on Domino, I got the error message from the tool:
  Couldn't create [dir1\\dir12]25 NO CREATE Names may not end with the '\' symbol.
  Another switch was required to specify the right folder separator : --sep1 '\'
  
  Anyhow I preferred to directly open the Perl script and modify the following line with:
  $t_sep = get_separator($to, $sep2, "--sep2");
  with
  $t_sep = "\\";

It works!