Another bug related to dns.
If a client mistypes in co-domains and instead of 'domain.com' writes 'domain .com', notice the space between domain and dot, ISPConfig creates the DNS record.
Named of course doesn't start.
There must be some sort of check there. Not all people know the exact syntax, etc. I don't know if this is fixed and don't want to try, but some time ago a client of mine created subdomain with '_' (underscore). ISPConfig created this DNS record as well.