Ldap auth attr submit channel MTA option

LDAP attributes returned upon authentication MTA options:  (LDAP attribute name)
(New in 8.0.) The  MTA option specifies the name of an LDAP attribute whose value should be returned, upon successful authentication, as the desired source channel name (the source channel to which to "switch" when    channel option is set). The default LDAP attribute name, if this option is not set, is.

See also:
 * saslswitchchannel Option
 * Direct LDAP attributes returned upon authentication MTA options
 * MTA options