DE EN IT

~/glossary / DNS

SRV record

An SRV record tells clients on which host and port a specific service for a domain is available.

daniele@mikweb: ~/glossary — man srv-record

SRV names follow the pattern _service._proto.domain, e.g. _caldavs._tcp.example.com. The value holds priority, weight, port and target host. Clients such as Thunderbird, DAVx5 or SIP phones use it to find their server without manual input.

The target must be a hostname with an A or AAAA record, not a CNAME. A target of . means the service is deliberately not offered.

Common mistake: the DNS panel appends the domain automatically and the name ends up as _caldavs._tcp.example.com.example.com.

Example

dig +short SRV _caldavs._tcp.example.com
daniele@mikweb: ~/glossary — ls

Related terms

CalDAV and CardDAVCalDAV and CardDAV are open protocols built on WebDAV that synchronise calendars (CalDAV) and address books (CardDAV) between a server and devices.A and AAAA recordAn A record maps a hostname to an IPv4 address; an AAAA record maps it to an IPv6 address.IMAPIMAP (Internet Message Access Protocol) is the protocol mail clients use to read, move and manage messages directly on the server.

← All terms