Configuring DNS 67 ldap.tcp.example.com. ldap.tcp.example.com. 86400 IN SRV 86400 IN SRV 10 20 100 100 389 389 hsv.example.com msy.example.com TA B L E 2 . 4 Field Domain name TTL Class Record type Priority The SRV record structure Meaning Domain for which this record is valid ( ldap.tcp.example.com. ). Time to live (86,400 seconds). This field is always IN , which stands for Internet . Type of record ( SRV ). Specifies a preference, similar to the Preference field in an MX record. The SRV record with the lowest priority is used first ( 10 ). Service records with equal priority are chosen according to their weight ( 100 ). The port where the server is listening for this service ( 389 ). Weight Port number