postfix+saslauthdでPAMを通してshadow認証する

etc--pam.d--imap

#%PAM-1.0
auth       required     pam_nologin.so
auth       include      system-auth
account    include      system-auth
session    include      system-auth

etc--pam.d--smtp

#%PAM-1.0
auth       required     pam_nologin.so
auth       include      system-auth
account    include      system-auth
session    include      system-auth

etc--postfix--main.cf.diff

diff --git postfix/main.cf postfix/main.cf
index 01146fd..3cebdde 100644
--- postfix/main.cf
+++ postfix/main.cf
@@ -74,6 +74,7 @@ mail_owner = postfix
 #
 #myhostname = host.domain.tld
 #myhostname = virtual.domain.tld
+myhostname = localhost
 
 # The mydomain parameter specifies the local internet domain name.
 # The default is to use $myhostname minus the first component.
@@ -81,6 +82,7 @@ mail_owner = postfix
 # parameters.
 #
 #mydomain = domain.tld
+mydomain = localhost
 
 # SENDING MAIL
 # 
@@ -97,6 +99,7 @@ mail_owner = postfix
 #
 #myorigin = $myhostname
 #myorigin = $mydomain
+myorigin = $mydomain
 
 # RECEIVING MAIL
 
@@ -113,7 +116,8 @@ mail_owner = postfix
 #inet_interfaces = all
 #inet_interfaces = $myhostname
 #inet_interfaces = $myhostname, localhost
-inet_interfaces = localhost
+#inet_interfaces = localhost
+inet_interfaces = all
 
 # Enable IPv4, and IPv6 if supported
 inet_protocols = all
@@ -264,6 +268,7 @@ unknown_local_recipient_reject_code = 550
 #mynetworks = 168.100.189.0/28, 127.0.0.0/8
 #mynetworks = $config_directory/mynetworks
 #mynetworks = hash:/etc/postfix/network_table
+mynetworks = 10.0.0.0/16, 127.0.0.0/8, 192.168.0.0/16
 
 # The relay_domains parameter restricts what destinations this system will
 # relay mail to.  See the smtpd_recipient_restrictions description in
@@ -417,6 +422,7 @@ alias_database = hash:/etc/aliases
 #
 #home_mailbox = Mailbox
 #home_mailbox = Maildir/
+home_mailbox = Maildir/
  
 # The mail_spool_directory parameter specifies the directory where
 # UNIX-style mailboxes are kept. The default setting depends on the
@@ -674,3 +680,13 @@ sample_directory = /usr/share/doc/postfix-2.6.6/samples
 # readme_directory: The location of the Postfix README files.
 #
 readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
+
+smtp_sasl_security_options = noplaintext,noanonymous
+
+smtpd_sasl_auth_enable = yes
+smtpd_sasl_local_domain = $myhostname
+smtpd_sasl_security_options = noanonymous
+smtpd_recipient_restrictions =
+    permit_mynetworks
+    permit_sasl_authenticated
+    reject_unauth_destination

etc--sasl2--smtpd.conf

pwcheck_method: saslauthd
mech_list: plain login

etc--sysconfig--saslauthd

# Directory in which to place saslauthd's listening socket, pid file, and so
# on.  This directory must already exist.
SOCKETDIR=/var/run/saslauthd

# Mechanism to use when checking passwords.  Run "saslauthd -v" to get a list
# of which mechanism your installation was compiled with the ablity to use.
MECH=pam

# Options sent to the saslauthd. If the MECH is other than "pam" uncomment the next line.
# DAEMONOPTS=--user saslauth

# Additional flags to pass to saslauthd on the command line.  See saslauthd(8)
# for the list of accepted flags.
FLAGS=