I have deployed OCS 2007 and when I attempt to logon to Communicator 2007 using auto discovery I get a Server is unavailable message.
Server is Windows Server 2003 R2
machine = control
domain = mydomain.local
sip domain = mydomain.net
If I manually specify control.mydomain.local as the server and use user@mydomain.net as the sign in address it works just fine.
I had created SRV records in mydomain.net to point to the ocs server but they were not working correctly so I removed them then ran SRVLookup in the OCS ResKit.
Doing a SRVLookup mydomain.net returned
No server available on _sipfederationtls._tcp.myd
So then I created that SRV record on mydomain.net and ran an nslookup on it and received:
> _sipfederationtls._tcp.myd
Server: UnKnown
Address: 192.168.9.253
_sipfederationtls._tcp.myd
priority = 0
weight = 0
port = 5061
svr hostname = control.mydomain.local
control.landruweb.local internet address = 192.168.9.251
I then re-ran OCS ResKit hoping to get further this time only to receive once again:
No server available on _sipfederationtls._tcp.myd
So now here I am nslookup shows the SRV record but the reskit still says it doesn't exist.
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The following SRV record needs to be created in the mydomain.net DNS zone: _sipinternaltls._tcp.mydom
_sipinternaltls._tcp.mydom
SIP.mydomain.net need to resolve to the IP address of the Std Edition or Pool IP (192.168.9.251).
**Notice zero reference to the actual AD FQDN anywhere.. the AD domain name is not relevant.
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Answer for Membership
by: adamg12345Posted on 2009-09-14 at 02:36:16ID: 25323881
Hi,
sipfederationtls is only used for federating with other organisations.
If you are doing this internally you need to add in _sipinternaltls._tcp.mydom
The other issue you will have is that the Service Hostname has to be in the same domain so it can not point to control.mydomain.local. It has to point to something like control.mydomain.net.
This is turn will need to have an A record for control.mydomain.net to 192.168.9.251 and control.mydomain.net will need to be on the OCS Certificate either as the Subject Name or as a SAN.
Adam