Removing group and group_attr was what did it for me. Hopefully this helps someone else in the future.
Set($ExternalSettings, { 'My_LDAP' => { 'type' => 'ldap', 'server' => 'ad.office.lbox.com', 'port' => '389', 'user' => 'CN=thisisauser,CN=Users,DC=office,DC=lbox,DC=com', 'pass' => 'redacted', 'base' => 'DC=office,DC=lbox,DC=com', 'filter' => '(objectClass=*)', 'd_filter' => '(userAccountControl:1.2.840.113556.1.4.803:=2)', 'tls' => 0, 'ssl_version' => 3, 'net_ldap_args' => [ version => 3, ], 'attr_match_list' => [ 'Name', 'EmailAddress', 'RealName', ], 'attr_map' => { 'Name' => 'sAMAccountName', 'EmailAddress' => 'mail', 'Organization' => 'physicalDeliveryOfficeName', 'RealName' => 'cn', 'ExternalAuthId' => 'sAMAccountName', 'Gecos' => 'sAMAccountName', 'WorkPhone' => 'telephoneNumber', 'Address1' => 'streetAddress', 'City' => 'l', 'State' => 'st', 'Zip' => 'postalCode', 'Country' => 'co' }, }} ); -- View this message in context: http://requesttracker.8502.n7.nabble.com/Active-Directory-and-RT-tp54021p54033.html Sent from the Request Tracker - User mailing list archive at Nabble.com. -- RT Training in Seattle, June 19-20: http://bestpractical.com/training