2.1 Transport

For the purposes of this protocol, an Autodiscover client and an Autodiscover server do not communicate directly. Instead, the Autodiscover client communicates with common well-known data sources that the Autodiscover server administrator has preconfigured.<1>

The following transports and data sources are used:

  • LDAP and LDAP directories. For more details, see [RFC1823].

  • The DNS and DNS SRV records. For more details, see [RFC1034] and [RFC2782].

  • Hypertext Transfer Protocol (HTTP) and HTTP 302 redirection. For more details, see [RFC2616].