The dns records are wrong. Each domain has its own zone in dns.
1) delete the alias kurdak.pl in the kurdak.eu zone.
2) Create a new dns zone for kurdak.pl similar to the one that you created for kurdak.eu so that kurdak.pl has a.records that point to the ip address of your server. the aliasing between the two domains is made by apache, so you dont have to add a alias record in dns.