Knowledgebase

SRV (Service) Record

An SRV or Service Record is a category of data in the DNS specifying information on available services. When looking up for a service, you must first look up the SRV Record for the service to see which server actually handles it. Then it looks up the Address Record for the server to connect to its IP Address.

The SRV Record has a priority field similar to an MX Record's priority value. Clients always use the SRV Record with the lowest priority value first and only fall back to other SRV Records if the connection with this Record's host fails. If a service has multiple SRV records with the same priority value, clients use the weight field to determine which host to use. The weight value is relevant only in relation to other weight values for the service, and only among SRV Records with the same priority value.

Newer Internet Protocols such as SIP (Session Initiation Protocol) and XMPP (Extensible Messaging and Presence Protocol) often require SRV support from clients.

  • 0 Users Found This Useful
     Was this answer helpful?

Related Articles

 SOA (Start of Authority) Record

Each Zone contains a single SOA Record, which holds the following values for the Zone: Name of Primary DNS Server: The domain name of the Primary DNS server for the Zone. The Zone should contain a matching NS Record. The...

 CNAME (Canonical Name) Record

CNAME Records are domain name aliases. Often computers on the Internet have multiple functions such as Web Server, FTP Server, Chat Server, etc.. To mask this, CNAME Records can be used to give a single computer multiple names (aliases)....

 What is DNS?

The Domain Name System (DNS) is a distributed database, arranged hierarchically, containing records for domain names. The DNS system's main aim is to match a domain name to an IP Address. In order to fulfill this role,...

 NS (Name Server) Record

NS Records identify the DNS servers responsible (authoritative) for a Zone. A Zone should contain one NS Record for each of its own DNS servers (primary and secondary). This mostly is used for Zone Transfer purposes (notify). These NS Records have...

 MX (Mail Exchange) Record

An MX Record identifies the email server(s) responsible for a domain name. When sending an email to user@xyz.com, your email server must first look up the MX Record for xyz.com to see which email server actually handles email...

Powered by WHMCompleteSolution