How do I find the information which format my mailboxes are?

I tried to look up my mail path on both machines, to compare if they match, but it just gives me errors.

ldapsearch -x -D 'mail=***@***,o=domainAdmins,dc=***,dc=***' -b 'o=domains,dc=***,dc=***' -W "(mail=***@***)" homeDirectory

On the old debian machine i get:

# extended LDIF
#
# LDAPv3
# base <o=domains,dc=***,dc=***> with scope subtree
# filter: (mail=***@***)
# requesting: homeDirectory
#

# search result
search: 2
result: 0 Success

on the new ubuntu machine:

# extended LDIF
#
# LDAPv3
# base <o=domains,dc=***,dc=***> with scope subtree
# filter: (mail=***@***)
# requesting: homeDirectory
#

# search result
search: 2
result: 32 No such object

I've got the DN from the iRedAdmin webpanel, as i exported the admin account to ldif

Is there an easy way to get the password for manager via console?

I only have SSH/FTP access to the server, yet.

Otherwise I'll have to get it next week

this doesn't work for me, gives me more errors..

s̶o̶ ̶i̶ ̶t̶r̶i̶e̶d̶ ̶t̶o̶ ̶l̶o̶o̶k̶ ̶i̶n̶t̶o̶ ̶t̶h̶e̶ ̶l̶d̶a̶p̶ ̶d̶a̶t̶a̶b̶a̶s̶e̶,̶ ̶w̶i̶t̶h̶ ̶"̶s̶l̶a̶p̶c̶a̶t̶"̶

a̶n̶d̶ ̶t̶h̶e̶r̶e̶ ̶a̶r̶e̶ ̶j̶u̶s̶t̶ ̶2̶ ̶a̶c̶c̶o̶u̶n̶t̶s̶?̶

d̶c̶=̶m̶y̶d̶o̶m̶a̶i̶n̶,̶d̶c̶=̶c̶o̶m̶
&̶
c̶n̶=̶a̶d̶m̶i̶n̶,̶d̶c̶=̶m̶y̶d̶o̶m̶a̶i̶n̶,̶d̶c̶=̶c̶o̶m̶

f̶o̶r̶ ̶t̶h̶e̶ ̶a̶d̶m̶i̶n̶ ̶e̶n̶t̶r̶y̶ ̶t̶h̶e̶r̶e̶ ̶i̶s̶ ̶a̶ ̶u̶s̶e̶r̶P̶a̶s̶s̶w̶o̶r̶d̶

r̶i̶g̶h̶t̶ ̶n̶o̶w̶ ̶i̶'̶m̶ ̶j̶u̶s̶t̶ ̶c̶o̶n̶f̶u̶s̶e̶d̶ ̶w̶h̶a̶t̶ ̶i̶s̶ ̶g̶o̶i̶n̶g̶ ̶o̶n̶ ̶t̶h̶e̶r̶e̶,̶ ̶a̶c̶c̶o̶u̶n̶t̶s̶ ̶s̶h̶a̶l̶l̶ ̶b̶e̶ ̶s̶t̶o̶r̶e̶d̶ ̶i̶n̶ ̶l̶d̶a̶p̶,̶ ̶b̶u̶t̶ ̶t̶h̶e̶r̶e̶ ̶a̶r̶e̶ ̶n̶o̶n̶e̶?̶

had to set "-f /etc/ldap/slapd.conf"

Yep I did that and migrated it to the new server (successful).

I can now login to the iRedAdmin Panel with the migrated data.

So I have my postmaster account (postmaster@mydomain.com) and its password,
the login on the iredadmin panel works just fine.

So I copied the old maildir

/var/vmail/vmail1/mydomain.com/p/o/s/postmaster-2012.01.12.10.07.45/Maildir/*

to the new one

/var/vmail/vmail1/mydomain.com/p/o/s/postmaster-2016.12.08.08.37.10/Maildir/*

to test if the mails migrated succesful. I also copied everything of the sieve folder.

But now I cannot login to the postmaster account in thunderbird anymore, but the login on the iredadmin panel works..?
Is there any option which prohibits the postmaster from logging into its mail account?