[Operators] about srv record

Kevin Smith kevin at kismith.co.uk
Sun Aug 14 08:50:38 UTC 2011


On Sat, Aug 13, 2011 at 11:25 PM, sergio <mailbox at sergio.spb.ru> wrote:
> Hello.
>
> Alice wants to delegate managing of SRV records to Bob.
> Is it valid to so:
>
> On Alice's name server:
> _xmpp-client._tcp.alice.com. CNAME _xmpp-client.bob.com.
> _xmpp-server._tcp.alice.com. CNAME _xmpp-server.bob.com.
> _jabber._tcp.alice.com.      CNAME _jabber.bob.com.
>
> On Bob's name server:
> _xmpp-client.bob.com. SRV  0 0 5222 xmpp1.bob.com.
> _xmpp-server.bob.com. SRV  0 0 5269 xmpp1.bob.com.
> _jabber.bob.com.      SRV  0 0 5269 xmpp1.bob.com.
>
> _xmpp-client.bob.com. SRV 10 0 5222 xmpp2.bob.com.
> _xmpp-server.bob.com. SRV 10 0 5269 xmpp2.bob.com.
> _jabber.bob.com.      SRV 10 0 5269 xmpp2.bob.com.

The _jabber SRV record isn't defined, so you can do away with that. If
you simply set

_xmpp_client_.tcp.alice.com and _xmpp_server._tcp.alice.com to point
to A records of bob.com (e.g. xmpp1.bob.com/xmpp2.bob.com), that will
do the job.

/K


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