You actually almost had it. On both window (at least my Win7 box I have here) and Ubuntu you would do nslookup -type=SRV _ldap._tcp.mydomain.com
(notice the single dash)
You actually almost had it. On both window (at least my Win7 box I have here) and Ubuntu you would do nslookup -type=SRV _ldap._tcp.mydomain.com
(notice the single dash)