* 'VirtualMailManager/AliasDomain.py'
* 'VirtualMailManager/constants/ERROR.py'
- Adjusted error codes
- 'VirtualMailManager/Domain.py'
- Domain.__init__() checks now whether the given domain name is known
for an alias domain
- Implemented Domain._isAlias()
- Corrected query in Domain.getAliaseNames() -> returns the alias names
ascending sorted