A Service (SRV) Record provides information (the location, i.e. hostname and port number) about available network services (for example, SIP and XMPP) based on a specific protocol and domain.
An SRV record consists of the following fields:
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Service Name - The name of the service, which is entered as a combination of the following three fields:
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Service - the symbolic name of the desired service (with an underscore)
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Protocol - the transport protocol (usually TCP or UDP) of the desired service (with an underscore)
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Name - the domain name for the record (with or without the trailing dot)
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For example: _sip._tls.example.biz
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Target - The canonical host name of the machine providing the service, entered as an FQDN with or without a trailing dot. Examples include:
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targetname.example.biz
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targetname.example.biz.
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Priority - The priority of the target host, entered as an integer. A lower value identifies a higher priority.
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Weight - A relative weight for records with the same priority, entered as an integer. A larger value increases the weight.
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Port - The Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port on which to find the service.
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TTL
