SRV
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... one or more resolutions of the form "_im.<proto>.example.com." or
"_pres.<proto>.example.com.", where "<proto>" would be a label
registered in the Instant Messaging SRV Protocol Label registry
or the Presence SRV ...
... Instant Messaging SRV Protocol Label registry
or the Presence SRV Protocol Label registry: either "_xmpp" for
an XMPP ...
... domain.
3. If both SRV address record resolutions fail, attempt to perform a
normal IPv4/IPv6 ...
... Administrators of server deployments are strongly encouraged to keep
the _im._xmpp, _pres._xmpp, and _xmpp._tcp SRV records properly
synchronized, since different implementations might perform the "_im"
and "_pres" lookups ...
... Instant Messaging SRV Protocol Label Registration ...
... Instant Messaging and Presence [IMP-SRV]
defines an Instant Messaging SRV Protocol Label registry for
protocols that can provide services ...
... registry for
protocols that can provide services that conform to the "_im" SRV
Service label. Because XMPP ...
... Presence SRV Protocol Label Registration ...
... Instant Messaging and Presence [IMP-SRV]
defines a Presence SRV Protocol Label registry for protocols that can
provide services ...
... registry for protocols that can
provide services that conform to the "_pres" SRV Service label.
Because XMPP ...