Kolab changed mailadres after login in LDAP! Serious issue!

[Matt .]

Hi Guys,

On my IPA install I was able to login but KOlab seems to mess up.

I was able to login using <name><surename> and password where kolab
auths using name at domain.tld

Now what happens... after I have logged in my mailaddress in IPA is changed from

name at domain.tld

to

surename at domain.tld

While testing I also need other mailboxes because kolab seems to
lookup what it wants and delivers around:

name at domain.tld
surename at domain.tld
namesurename at domain.tld
namesurename at ipadomain.local

After there were added I was able to receive mail but I don't see it
in my inbox but on the commandline in /var/spool/mail I have a file
namesurename which contains the mail

How can this happen and how do I solve it ?

Matt