An SRV record, which means Service record, is a DNS entry that is used to identify the servers which run a specific service for a domain. Basically, you can use your domain name not only for a web site, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, for instance, while you still have an Internet site with it. When you create the SRV record, you can pick what Internet Protocol it's going to use, on which port the connection to the particular server is going to be established as well as the priority and the weight of the record provided that there are several SRV records for the exact same service. The latter option will permit you to employ different machines for load balancing and redundancy. Using this type of DNS records, you may use the same domain many different purposes and even with different providers if the same one is unable to provide all services you need.