multi-valued attribute suddenly become comma-separated

[Alexander Bruckner <bruckner@universaledition.com>]

Hi,

Installed version:

OpenLDAP: slapd 2.3.30

My problem is that multi-valued attributes become single-valued 
attribtues with the values as comma separated list without any 
observable reason.

An entry should look like this (as it is entered into the directory):
...
mail: testing1@test.com
mail: testing2@test.com

After a while the entry suddenly looks like this:
mail: testing1@test.com, testing2@test.com

Does anybody know, what the reason of this behaviour could be? I cannot 
find any cron-jobs modifying the ldap-directory, or any application with 
write-permission. The modification seems to happen accidentally.

Thanks in advance,
Alex Bruckner