Zimbra

gfdos.sys · #1 (**permalink**) 09-09-2005, 11:04 AM

I see migration wizard for Exchange... Any suggestions for my Squirel Mail users? I am using qmail, and have IMAP available. My mailbox is currently running on RH9. I could build a brand new box with FC3 or FC4.... but I need to find a way to migrate the info to this new server.

Gabe

KevinH · #2 (**permalink**) 09-09-2005, 01:33 PM

There are some OSS solutions to do imap migration and imap mailbox copies For very small user groups you can use a mail client. For larger groups this can be done with such a tool. We don't have a reccomended *best* solution at this time. We welcome feedback of what worked for you. A web search turned up a few links that may be a starting point.

http://freshmeat.net/projects/imapmigration/
http://www.jplanglois.com/products/imapcp/
http://freshmeat.net/projects/migrationtool/

-kevin

GertThiel · #3 (**permalink**) 09-10-2005, 08:05 AM

I'm using "imapsync" from http://www.linux-france.org/prj/ successfully.

Quote:

The command imapsync is a tool allowing incremental and recursive imap transfer from one mailbox to another.

We sometimes need to transfer mailboxes from one imap server to another. This is called migration.

imapsync is the adequate tool because it reduces the amount of data transfered by not transfering a given message if it is already on both sides. Same headers, same message size and the transfert is done only once. All flags are preserved, unread will stay unread, read will stay read, deleted will stay deleted. You can stop the transfert at any time and restart it later, imapsync is adapted to a bad connection.

Read http://www.linux-france.org/prj/imapsync/README first.

- Gert

GertThiel · #4 (**permalink**) 09-10-2005, 08:08 AM

Quote:

Originally Posted by GertThiel

I'm using "imapsync" from http://www.linux-france.org/prj/ successfully.

Do not forget to include "--syncinternaldates" to keep keep important date intact!

- Gert

KevinH · #5 (**permalink**) 09-10-2005, 09:37 AM

Gert, If you get a chance can you post a step by step on what you did so folks can share your knowledge. Also would be helpful to include the mail server you migrated from.

-kevin

GertThiel · #6 (**permalink**) 09-10-2005, 10:19 AM

imapsync is a perl script to syncronize one IMAP message base with another. You can download it from here. A Read Me is also available.
If you use the Gentoo Linux distro try emerge imapsync

Before you can use imapsync you must have both the source IMAP message store and ZCS up running and working user account accessable. You should check that using an email client before starting the migration.

Before you start, consider that imapsync will be a heavy load on your CPU and memory. The system running the migration will be less responsive.

For this example my existing IMAP server is running on server.gtds.lan and I set up Zimbra on a new machine named zimbra.gtds.lan.

imapsync --syncinternaldates
--host1 server.gtds.lan --user1 yourAccount --password1 yourPassword
--host2 zimbra.gtds.lan --user2 yourZimbraAccount --password2 yourZimbraPassword

Of course the complete command belongs in one line.

Less easy but much more secure is it to omit the --password{1|2} options, write each password into a seperate file and use the --passfile{1|2} option intead.

You may interrupt imapsync at any time with CTRL-C. Simply restart the same command again to resume the migration.

I used imapsync to migrate from a Cyrus IMAPd to Zimbra. The Read Me lists a number of other IMAP servers compatible with imapsync.

Questions? Just ask

- Gert

GertThiel · #7 (**permalink**) 09-11-2005, 11:38 PM

You should add --nosyncacls:

imapsync --nosyncacls --syncinternaldates
--host1 server.gtds.lan --user1 yourAccount --password1 yourPassword
--host2 zimbra.gtds.lan --user2 yourZimbraAccount --password2 yourZimbraPassword

ZCS' IMAP implementation has no acl related capabilities. Hence don't waste efforts with that.

- Gert

GertThiel · #8 (**permalink**) 09-12-2005, 01:50 AM

imapsync will not be able to authenticate to ZCS until you Enable clear text login for the IMAP service.
You can set that option under Global Settings > IMAP in zimbraAdmin.

Did I forget to tell you that, really

- Gert

sahuguet · #9 (**permalink**) 09-13-2005, 08:35 PM

I am trying to use imapsync with one server with imap SSL.
Any quick idea about how to make it work?

I am looking at various examples of modified version of Perl IMAPClient used by imapsync.

regards,

Arnaud

sahuguet · #10 (**permalink**) 09-13-2005, 09:58 PM

One just needs to modify the imapsync code for SSL support.
Check the code snippet by Nick Burch.