I would like to know whether it is possible to sync mail between a backed-up maildir used by a decommissioned dovecot install and a live email account in cyrus, or transfer the mail from the backup to cyrus. A narrative about why we must do this follows.
We had a cPanel server with mail on it which we are in the process of migrating to a mail server that we are going to maintain in-house. The in-house Mail Server consists of Postfix+Cyrus+SOGo+LDAP(for authentication). The cPanel Server had dovecot. We are planning to use imapsync to transfer the mails between the servers.
I have tested this with 2 active mailboxes on both the servers and the transfer occurs seamlessly. However, the question is, we have copied the mail folders for the users on the cPanel server to our local server at a separate location and want to make the transfer/sync from those folders to the mailboxes.
Checking this link threw some light upon syncing between folders but both syncing a folder to an imap mailbox.
This is what the copied folder for a user at looks like (located at /some/random/location/on/the/server/me):
drwx------ 2 tester tester 16384 Jul 14 09:51 cur
-rw-r----- 1 tester tester 0 May 27 12:55 dovecot-acl-list
-rw-r----- 1 tester tester 2908 Jul 14 09:50 dovecot.index
-rw-r----- 1 tester tester 196608 Jul 14 09:51 dovecot.index.cache
-rw-r----- 1 tester tester 8712 Jul 14 09:51 dovecot.index.log
-rw-r----- 1 tester tester 13 May 27 15:45 dovecot-keywords
-rw-r----- 1 tester tester 8358 Jul 14 09:50 dovecot-uidlist
-rw------- 1 tester tester 8 Jun 22 11:06 dovecot-uidvalidity
-rw------- 1 tester tester 0 May 27 12:55 dovecot-uidvalidity.51a30a63
-rw-r----- 1 tester tester 2762 Jul 14 01:11 maildirsize
drwx------ 2 tester tester 4096 Jul 14 09:50 new
-rw-r----- 1 tester tester 44 Jun 22 11:05 subscriptions
drwx------ 2 tester tester 4096 Jul 14 01:11 tmp
This is what the destination imap location for a user looks like:
-rw------- 1 cyrus mail 781 Jul 14 10:29 1.
-rw------- 1 cyrus mail 752 Jul 14 10:33 cyrus.cache
-rw------- 1 cyrus mail 156 Jul 14 10:29 cyrus.header
-rw------- 1 cyrus mail 184 Jul 14 10:33 cyrus.index
drwx------ 2 cyrus mail 4096 Jul 14 10:32 Sent
drwx------ 2 cyrus mail 4096 Jul 14 10:29 spam
where 1. is the mail received by this user.
To sync between the mailboxes I used the following command:
imapsync --host1 webmail.my1testserver.com --user1 me@my1testserver.com --password1 XXXXXX --host2 localhost --user2 testuser --password2 XXXXXX
The sync happens between my mailbox whch is online and my local imap mailbox. Now, how would I sync a folder on my server to a mailbox on my server?
To clarify, the backup taken from the cPanel is in the form of folders with the folder name being the username(first part of the email address). This needs to be migrated/added to the live Cyrus mailboxes.