As mentioned in http://www.iredmail.org/wiki/index.php? … il.Server, you can simply copy all mailboxes to new server.

This is exactly the one you need.

I won't be too hard.

What you should care about:

- Maildir path. Make sure you have correct maildir path after migrating from LDAP to MySQL, so that user can see their old emails.
- Password stored in LDAP is encrypted in SSHA, it cannot be migrated to MySQL directly. You should reset password for all users.

You can create mail accounts with iRedAdmin (or other web/command line tools), then copy mailboxes one-by-one to ensure you're using correct maildir.

Setup a new iRedMail server with ldap backend, export your just the iRedMail email/user account in phpldapadmin and import them to your new iRedMail server. Copy your current /var/vmail/vmail1/@domain.com to your new iRedMail server (same location). Remember to check the files/folders permission. You can test it in vmware/virtualbox before do it live.

If you are using roundcubemail, make sure you backup the mysql database too. Same go for any important mysql data you have in other database.

OK, worked my ass off tonight and I think I got it all working. Thanks for your most helpful about the maildir paths.

Now I've got the problem that people can send me emails but these emails dont seem to be processed correctly. my dns settings (new server is lower in priority but gets contacted because the old servers email services are stopped) are correct.

iredapd.log gives me this:

2012-08-01 00:25:30 INFO Starting iredapd (v1.3.7, ldap). Enabled plugin(s): ldap_maillist_access_policy, block_amavisd_blacklisted_senders. Listening on 127.0.0.1:7777.
2012-08-01 01:00:34 INFO [94.97.34.187] 471C84A82@beproactive.com -> andy.woolley@ieku.de, DUNNO
2012-08-01 03:27:12 INFO [91.44.91.177] nas@oneofmydomains.net -> nas@oneofmydomains.net, DUNNO
2012-08-01 04:53:06 INFO [127.0.0.1] admin@anotherofmydomains.net -> acoustomery@atmydomain.org, DUNNO
2012-08-01 05:08:13 INFO [213.165.64.22] afriend@gmx.de -> kathrin@acustomersdomain.de, DUNNO
2012-08-01 05:08:49 INFO [213.165.64.23] afriend@gmx.de -> admin@mydomain.de, DUNNO

Can anyone help me in fixing this "DUNNO" error? According to ZhangHuangbin its normal, but in fact these mails never show up in Roundcube mail and my synchronized old mails do.

Other Errors I got

mail.err (but this was from 8-9 hours ago when i started installing)
postfix/trivial-rewrite[26171]: fatal: proxy:ldap:/etc/postfix/ldap/virtual_mailbox_domains.cf(0,lock|fold_fix): table lookup problem

//Edit: I think I found the problem

mail.info
Aug  1 05:14:54 shibuyaku postfix/smtpd[1243]: connect from mailout-de.gmx.net[213.165.64.22]
Aug  1 05:14:54 shibuyaku postfix/smtpd[1243]: warning: connect to 127.0.0.1:10031: Connection refused
Aug  1 05:14:54 shibuyaku postfix/smtpd[1243]: warning: problem talking to server 127.0.0.1:10031: Connection refused
Aug  1 05:14:55 shibuyaku postfix/smtpd[1243]: warning: connect to 127.0.0.1:10031: Connection refused
Aug  1 05:14:55 shibuyaku postfix/smtpd[1243]: warning: problem talking to server 127.0.0.1:10031: Connection refused
Aug  1 05:14:55 shibuyaku postfix/smtpd[1243]: NOQUEUE: reject: RCPT from mailout-de.gmx.net[213.165.64.22]: 451 4.3.5 Server configuration problem; from=<afriend@gmx.de> to=<acustomer@mydomain.de> proto=SMTP helo=<mailout-de.gmx.net>
Aug  1 05:14:55 shibuyaku postfix/smtpd[1243]: disconnect from mailout-de.gmx.net[213.165.64.22]

Apparently theres a problem with my servers configuration. Any ideas?
After reading this (http://www.iredmail.org/forum/topic3217 … fused.html) it occured to me, that I could be dealing with a policyd problem. In fact there is no /etc/init.d/policyd in my installation and no policyd tables in my MySQL either. Dont really know how to fix this here :\

//Edit Nr 5:
http://www.iredmail.org/forum/topic1215 … olved.html
This has good hints, there are too many spaces in our /etc/postfix-policy.d conf AND the policyd-database was not even created for me. i purged postfixd-policy, reinstalled it (which made the database work) and afterwards removed all spaces in the LOG_ERR containing line of postfix-policyd.conf

Everything seems to be working now, well: at least my customers can write and recieve mails with roundcube and I'll have to go and catch some sleep after coding/configurating for 22 hours (not just mail stuff, I was at work before ^^)

Everything is working super fine now.
OK... all thats left now is SPD/DKIM configuration on the dns servers, but I'm convinced I will be able to pull that off too.
Thank you so much guys & Zhang, I've learnt a lot in the last few days. And I really love iRedMail, the web interface alone is just so helpful and the help with installing alle these components that rely on each other is awesome too.

Policyd service is not running, it's not related to iptables.