Synchronizing with a Password File......................................................................................

83

Adding a Group Entry........................................................................................................

83

Maintaining Group Membership..........................................................................................

84

Deleting a Group Entry.......................................................................................................

84

Retrieving a Group Entry.....................................................................................................

85

Setting a User's Password in the LDAP Directory Server...........................................................

85

Starting the ldapcd Daemon................................................................................................

85

Stopping the ldapcd Daemon..............................................................................................

86

Maintaining the LDAP Directory Server Using LDAP Commands....................................................

86

Adding Entries to an LDAP Database....................................................................................

86

Modifying Entries in an LDAP Database................................................................................

86

Overview of the LDAP Client....................................................................................................

87

Actions Performed by the LDAP Client...................................................................................

87

Authentication Actions Performed.........................................................................................

87

Files Modified by theLDAP Module for System Authentication...................................................

87

Files Not Modified by the LDAP Module for System Authentication............................................

87

Other Important Files..........................................................................................................

87

/etc/ldapusers.deny......................................................................................................

87

/etc/ldapusers.allow.....................................................................................................

88

Behavior of the the ldapdc Daemon.....................................................................................

88

Debugging ldapdc.............................................................................................................

88

Operation of login/su........................................................................................................

88

5 Mail Delivery Administration......................................................................

90

Sendmail Server Administration................................................................................................

90

Configuring the System as a Standalone Mail System.............................................................

91

Configuring the System as a Mail Client................................................................................

91

Configuring the System as a Mail Server...............................................................................

91

Creating and Deleting Host Aliases for a Mail Server.........................................................

92

Changing the Sendmail Server Configuration........................................................................

93

Configuring Mail Protocols.............................................................................................

94

Creating and Deleting Pseudo Domain Aliases.............................................................

94

Configuring the MTS Protocol.....................................................................................

95

Configuring the DECnet Phase IV Protocol....................................................................

95

Configuring the DECnet/OSI Protocol.........................................................................

96

Configuring the UUCP Protocol..................................................................................

97

Configuring the X.25 Protocol....................................................................................

97

Configuring Masquerading............................................................................................

98

Accessing the Configure Masquerading Form...............................................................

98

Users Automatically Excluded from Masquerading........................................................

99

Configuring Your System for Masquerading...............................................................

100

Configuring Virtual Domains.........................................................................................

101

Enabling Procmail as a Local Mailer..............................................................................

103

Enabling Anti-Virus......................................................................................................

103

Configuring Anti-Spam.................................................................................................

104

Configuring Relaying..............................................................................................

104

Configuring the Access Database.............................................................................

105

Configuring Checking on Sender's Information...........................................................

107

Configuring LDAP........................................................................................................

107

Configuring Mail Filters (MILTER)...................................................................................

108

Adding a Mail Filter...............................................................................................

109

Modifying a Mail Filter...........................................................................................

109

Deleting a Mail Filter..............................................................................................

110

Filters Included with Internet Express..........................................................................

110

Contents 5