Windows Server

Will Wilson · Guest

We are getting ready to deploy LCS for all of our remote users to use
Communicator while at home or on the road. We currently have LCS05 SP1
running internally just fine with communicator and are ready to move to the
next step. However I have some questions about the DNS setup.

I have read thru the Microsoft documentation and I have a question about the
DNS setup:

Currently our public DNS is hosted thru our ISP. We will be using a DNS
record pointing to "im.company.com" an one of our public IP's that will map
to the access proxy. This part is pretty straight forward, however I would
like to know where I need to configure the SRV DNS records for SIP. Is this
done on our DNS servers or on our ISP's? I have talked with our ISP and
they can not add SIP records, only A records, and they use a Linux DNS
system. I have read the directions 10x and I understand everything I need
to do for DNS but I do not know if this is stuff I need to configure on my
end or the ISP's end.

This may not be very clear but any help on this would be appreciated.

Thank you.

Peter Haugaard Larsen · Guest

Hi Will

If you need federation, access to the public instant messaging cloud or
autoconfiguration of the MOC client for remote users you'll need to add the
following SRV record to your public DNS zone.

_sip._tls.company.com SRV service location:
priority = 0
weight = 0
port = 5061
svr hostname = im.company.com
(In port you can use any port you like and have configured you LCS Access
Proxy server to respond to, like 443 if you have problems traversing
firewalls)

If your ISP are running Bind DNS server it must be at least version 8.2.2 to
support SRV records

If you configure the MOC client manualy or by using group policies you don't
need the record.

Regards,

Peter Haugaard Larsen

"Will Wilson" <will.wilson@hotmail.com> wrote in message
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