2.4.2.1 mailAddress Attribute

The mailAddress attribute of the Server object (section 2.4.2) that corresponds to a DC indicates the SMTP recipient address used by that server for the DRS Protocol Extensions for SMTP transport.

The mailAddress is a Unicode string that MUST meet the requirements of an addr-spec, as specified in [RFC2822] section 3.4.1. This includes being in the form local-part@domain.

A directory server that is sending an update request via the DRS Protocol Extensions for SMTP determines the appropriate email To address field by querying the value of this attribute for the destination computer's Server object. The directory server sets the From address field by querying the value of this attribute for its own Server object.