Throw logging warning if users are not in the LDAP
Throw logging warning if users are not in the LDAP

Fix #116

MarauderXtreme/sipa,lukasjuhrich/sipa,lukasjuhrich/sipa,MarauderXtreme/sipa,fgrsnau/sipa,agdsn/sipa,MarauderXtreme/sipa,fgrsnau/sipa,agdsn/sipa,fgrsnau/sipa,agdsn/sipa,lukasjuhrich/sipa,lukasjuhrich/sipa,agdsn/sipa