IMAPsync/FAQ.d/FAQ.Cyrus.txt

#!/bin/cat
$Id: FAQ.Cyrus.txt,v 1.2 2021/02/19 13:39:03 gilles Exp gilles $

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             Imapsync tips for the Cyrus imap server
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This documentation is also available online at
https://imapsync.lamiral.info/FAQ.d/
https://imapsync.lamiral.info/FAQ.d/FAQ.Cyrus.txt


Questions answered in this FAQ are:

Q. How to migrate from cyrus with an admin account?

Q. I'm migrating from WU to Cyrus, and the mail folders are under
   /home/user/mail but the tool copies everything in /home/user, how
   can i avoid that?

Q. I'm migrating from WU to Cyrus, and the mail folders are under
   /home/user/mail directory.  When imapsync creates the folders in
   the new cyrus imap server, it makes a folder "mail" and below that
   folder puts all the mail folders the user have in /home/user/mail,
   i would like to have all those folders directly under INBOX.

Q. Migrating from Groupwise to Cyrus

Now the questions again with their answers.


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Q. How to migrate from cyrus with an admin account?

R. Use:
 
 imapsync ... \
   --authuser1 admin_user  ----password1 admin_user_password \
   --user1 foo_user --ssl1

Instead of --ssl1 the alternative --tls1 can be used.
With --authuser1, the option --authmech1 PLAIN is set
automatically, you don't have to add it.

PLAIN authentication is the only way to go with --authuser1 for now.
So don't use --authmech1 SOMETHING with --authuser1 admin_user,
it will not work.
Same behavior with the --authuser2 option.

Do not forget the option --ssl1 or --tls1 since PLAIN auth is only
supported with ssl encryption most of the time. But it can
work without --ssl1 nor --tls1 if PLAIN is permitted in clear text
transmissions (the normal mode).

Add the AdminAccount to admins line in /etc/imapd.conf
Give AdminAccount lrswipkxtecda to the Cyrus Imap account 
being migrated from, "joe" here.


Here is an example:
 imapsync \
	--host1 server1 \
	--user1 joe \
	--authuser1 AdminAccount \
	--password1 AdminAccountPassword \
	--ssl1 \
	--host2 server2 \
	--user2 joe \
	--password2 joespassonserver2 \
	--exclude "^user\."

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Q. I'm migrating from WU to Cyrus, and the mail folders are under
   /home/user/mail but the tool copies everything in /home/user, how
   can i avoid that?

Two solutions:

R. Use
   imapsync ... --include '^mail'

R. or (better)
   imapsync ... --subscribed --subscribe

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Q. I'm migrating from WU to Cyrus, and the mail folders are under
   /home/user/mail directory.  When imapsync creates the folders in
   the new cyrus imap server, it makes a folder "mail" and below that
   folder puts all the mail folders the user have in /home/user/mail,
   i would like to have all those folders directly under INBOX.

R. Use 
   imapsync ... --regextrans2 's/^mail/INBOX/' --dry
   look at the simulation and if all transformations seem
   good then remove the --dry option.


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Q. Migrating from Groupwise to Cyrus

R. By Jamie Neil:

I eventually managed to get the mail to migrate without errors using the 
following options:

--maxage 3650
  - some messages just don't seem to want to transfer and produce the 
    perl errors I mentioned before. This prevents the errors, but the
    bad messages don't transfer.

Even though the mail migrated OK, there are a couple of gotchas with 
Groupwise IMAP:

1) Some of the GW folders are not real folders and are not available
to IMAP, the main problem one being "Sent Items". I could find no way
of coping the contents of these folders. The nearest I got was to
create a "real" folder and copy/move the sent items into it, but
imapsync still didn't see the messages (I think because there is
something funny about the reported dates/sizes).

It think this problem has been rectified in GW6.5.

2) Version 6.0.1 of the Groupwise Internet Connector sucks. I was 
getting server aborts when I pushed it a bit hard! I eventually had to
upgrade to 6.0.4 which seems to be a lot more stable.

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