A godaddy srv record is a Domain Name System (DNS) entry that specifies the location of a service host, such as a VoIP server or email gateway, by defining its hostname, port, priority, and weight. It enables applications to locate and connect to backend services using standardized naming.
Servers use SRV records to dynamically discover services across networks. For example, when a user sends an email through a custom domain, the receiving mail server queries the DNS for an SRV record pointing to the correct mail transfer agent. Without this record, delivery may fail or default to less secure paths.
GoDaddy's DNS platform supports SRV records under the "Manage DNS" section of a domain's control panel. You enter the service name, protocol, priority, weight, port, and target hostname. These fields follow the RFC 2782 standard, which defines how SRV records operate globally.
When a client attempts to access a service like video conferencing or instant messaging, the system performs a DNS lookup for the SRV record associated with the service's subdomain. The query includes the service name (e.g., _sip), protocol (e.g., _tcp), and domain (e.g., example.com).
The DNS resolver returns a list of hosts that provide the service, ranked by priority and weighted by load distribution. Lower priority numbers take precedence. If multiple entries have the same priority, the weight value determines the likelihood of selection-higher weights mean higher probability.
For instance, a SIP-based VoIP system might use the SRV record _sip._tcp.example.com with a priority of 10, weight of 50, port 5060, and target sipserver.example.com. Clients then attempt connection to sipserver.example.com on port 5060.
An SRV record consists of five required fields:
Example entry in GoDaddy's DNS editor:
| Field | Value |
|---|---|
| Type | SRV |
| Name | _sip._tcp |
| Priority | 10 |
| Weight | 50 |
| Port | 5060 |
| Target | sip-server.example.com |
GoDaddy validates each field during entry. Invalid ports (outside 1-65535), malformed FQDNs, or missing values trigger immediate error messages. This prevents misconfiguration that could disrupt service discovery.
SRV records are essential for modern internet services requiring changing routing. They're used in:
For example, a company using Microsoft Teams with a custom domain requires an SRV record to route authentication requests. The record _sip._tcp.company.com points to a hosted Microsoft SfB server. Without it, users cannot join meetings via their custom domain.
Another case: a university running a campus-wide chat system based on XMPP. The SRV record _xmpp-client._tcp.university.edu with priority 5 and weight 100 directs clients to chat.university.edu on port 5222. This ensures consistent access regardless of network path.
According to ICANN's documentation on DNS resource records, SRV records are critical for service discovery in distributed environments. The Internet Engineering Task Force (IETF) published RFC 2782 in 2000, which remains the authoritative specification for SRV syntax and behavior.
Many users mistake SRV records for A records or CNAMEs. An A record maps a domain to an IPv4 address. A CNAME redirects one name to another. Neither handles service-specific routing.
For example, setting an A record for mail.example.com to 192.0.2.10 only resolves the IP. It doesn't specify which port or protocol to use. SRV records solve this gap by including port and priority information.
Another common error is omitting the show prefix in the service name. Entering sip._tcp instead of _sip._tcp results in a failed lookup. The show is mandatory in the service and protocol fields.
Some assume SRV records are optional. But for protocols relying on DNS-based discovery-like SIP or XMPP-they are required. Missing records lead to connection failures, especially in federated systems.
To create an SRV record in GoDaddy:
I configured an SRV record for a client's internal video conferencing system. The setup involved creating _video._tcp.example.net with priority 20, weight 75, port 10080, and target vc.example.net. After saving, I verified the record using dig SRV _video._tcp.example.net. The response confirmed correct parsing and TTL values.
Use tools like dnschecker.org or nslookup to validate propagation. Wait at least 15 minutes after saving before testing. Some providers cache results longer.
Set priority values between 0 and 65535. Use lower numbers for primary servers. Weight values should reflect server capacity-higher-capacity machines get higher weights.
Keep records short. The maximum length for a single SRV record is 255 characters. Long target names may exceed limits. Use subdomains like srv1.example.com instead of long FQDNs.
Don't mix SRV records with wildcard entries. Wildcards like *.example.com do not apply to SRV lookups. The query must match the exact service and protocol.
SRV records don't support IPv6 addresses directly. The target field still uses FQDNs. Resolve IPv6 addresses via AAAA records separately.
GoDaddy allows up to 100 DNS records per domain. SRV records count toward this limit. If you manage many services, consider using a dedicated subdomain like services.example.com to organize entries.
Understanding godaddy srv record configuration ensures reliable service routing. It's not just a technical detail-it's a foundation for secure, scalable communication infrastructure.