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Configuring DNS for instant messaging

About SRV records

SRV (service) records are entries in your DNS which specify the location of service servers. You must configure SRV records to make instant messaging in Kerio Connect accessible from other servers.

There are two types of SRV records:

Go to the Kerio Connect administration (Configuration → Instant Messaging) to check if the SRV records for your domain are configured (for detailed information, read article Configuring instant messaging in Kerio Connect).

You must add SRV records on your DNS server or use the management interface of your DNS registrar to add the records.

Visit XMPP wiki or Wikipedia for more information on SRV records.

Configuring DNS records for server to server communication

Follow this example to add a server SRV record to your DNS:

_xmpp-server._tcp.feelmorelaw.com. 18000 IN SRV 0 5 5269 mail.feelmorelaw.com.
Service_xmpp-server
Protocol_tcp
Hostname/NameYour domain name
PriorityPriority of the target
WeightWeight for records of the same priority
Port5269
Target/ValueYour server hostname
TTLTime to live value

The following items can be changed:

  • Domain name (feelmorelaw.com)

  • Server hostname (mail.feelmorelaw.com)

  • TTL (18000)

  • Record priority (0)

  • Record weight (5)

Do not change the port number (5269).

Configuring DNS records for client auto-configuration

If the name of your domain differs from the name of the instant messaging server, you can add a client SRV record to your DNS.

This record allows auto-configuration of instant messaging clients. Without the client SRV record, users must manually specify the server and port in their client configuration.

Follow this example to add a client SRV record to your DNS:

_xmpp-client._tcp.feelmorelaw.com. 18000 IN SRV 0 5 5222 mail.feelmorelaw.com.
Service_xmpp-client
Protocol_tcp
Hostname/NameYour domain name
PriorityPriority of the target
WeightWeight for records of the same priority
PortPort for communication from client to server
Target/ValueYour server hostname
TTLTime to live value

The following items can be changed:

  • Domain name (feelmorelaw.com)

  • Server hostname (mail.feelmorelaw.com)

  • TTL (18000)

  • Record priority (0)

  • Record weight (5)

  • Port 5222


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