Domains with scandic characters

==== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Centos 6.5 64bit
- Related log if you're reporting an issue: iRedAdmin-Pro
====

Hi,

Should it be possible to add domains with scandic characters as äö or å?

When i try to add one iredadmin says 'Error: Invalid domain name.'