attributetype (1.1.2.1.1.1 NAME 'mailForward'
    DESC 'forward address'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26)

attributetype (1.1.2.1.1.2 NAME 'mailAlias'
    DESC 'alias address'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26)

attributetype (1.1.2.1.1.3 NAME 'mailDrop'
    DESC 'drop address'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26)

attributetype (1.1.2.1.1.4 NAME 'mailDir'
    DESC 'path of mailDir'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE)

attributetype (1.1.2.1.1.5 NAME 'imapMailDir'
    DESC 'Path of ImapMailDir'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )

attributetype (1.1.2.1.1.6 NAME 'aliasCommand'
    DESC 'Include Command'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )

attributetype (1.1.2.1.1.7 NAME 'accountActive'
    DESC 'active or not active'
    EQUALITY booleanMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 SINGLE-VALUE)

attributetype (1.1.2.1.1.8 NAME 'domainName'
    DESC 'domain name'
    EQUALITY caseIgnoreIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE)

attributetype (1.1.2.1.1.9 NAME 'accountGroup'
    DESC 'mail group'
    EQUALITY caseIgnoreIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE)

attributetype (1.1.2.1.1.10 NAME 'transport'
    DESC 'transport'
    EQUALITY caseIgnoreIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26)

objectClass (1.1.2.2.1.2 NAME 'userAccount'
    DESC 'mail user Object'
    SUP inetOrgPerson
    MUST ( mailDir $ accountActive $ domainName )
    MAY  ( mailForward $ homeDirectory $ mailAlias $ imapMailDir ))

objectClass (1.1.2.2.1.3 NAME 'groupAccount'
   DESC 'ML Group Account Object'
   SUP inetOrgPerson
   MUST ( accountActive $ domainName $ mailDrop $ accountGroup )
   MAY  ( aliasCommand ))

objectClass (1.1.2.2.1.4 NAME 'adminAccount'
    DESC 'admin user Object'
    SUP inetOrgPerson
    MUST ( domainName $ transport $ accountGroup ))

objectClass (1.1.2.2.1.5 NAME 'masterAccount'
    DESC 'master user Object'
    SUP inetOrgPerson
    MUST ( accountGroup ))