PREIN

/bin/sh

# Add user and groups if necessary
/usr/sbin/groupadd -g 90 -r postdrop 2>/dev/null
/usr/sbin/groupadd -g 89 -r postfix 2>/dev/null
/usr/sbin/groupadd -g 12 -r mail 2>/dev/null
/usr/sbin/useradd -d /var/spool/postfix -s /sbin/nologin -g postfix -G mail -M -r -u 89 postfix 2>/dev/null
exit 0

PREUN

/bin/sh

umask 022

if [ "$1" = 0 ]; then
    # stop postfix silently, but only if it's running
    /sbin/service postfix stop &>/dev/null
    /sbin/chkconfig --del postfix
    /usr/sbin/alternatives --remove mta /usr/sbin/sendmail.postfix
fi

exit 0

POSTIN

/bin/sh

umask 022

/sbin/chkconfig --add postfix

# upgrade configuration files if necessary
/usr/sbin/postfix set-permissions upgrade-configuration \
	config_directory=/etc/postfix \
	daemon_directory=/usr/libexec/postfix \
	command_directory=/usr/sbin \
	mail_owner=postfix \
	setgid_group=postdrop \
	manpage_directory=/usr/share/man \
	sample_directory=/usr/share/doc/postfix-2.3.3/samples \
	readme_directory=/usr/share/doc/postfix-2.3.3/README_FILES

/usr/sbin/alternatives --install /usr/sbin/sendmail mta /usr/sbin/sendmail.postfix 30 \
        --slave /usr/bin/mailq mta-mailq /usr/bin/mailq.postfix \
        --slave /usr/bin/newaliases mta-newaliases /usr/bin/newaliases.postfix \
        --slave /etc/pam.d/smtp mta-pam /etc/pam.d/smtp.postfix \
        --slave /usr/bin/rmail mta-rmail /usr/bin/rmail.postfix \
	--slave /usr/lib/sendmail mta-sendmail /usr/lib/sendmail.postfix \
        --slave /usr/share/man/man1/mailq.1.gz mta-mailqman /usr/share/man/man1/mailq.postfix.1.gz \
        --slave /usr/share/man/man1/newaliases.1.gz mta-newaliasesman /usr/share/man/man1/newaliases.postfix.1.gz \
        --slave /usr/share/man/man8/sendmail.8.gz mta-sendmailman /usr/share/man/man1/sendmail.postfix.1.gz \
        --slave /usr/share/man/man5/aliases.5.gz mta-aliasesman /usr/share/man/man5/aliases.postfix.5.gz \
	--initscript postfix

POSTUN

/bin/sh

if [ "$1" != 0 ]; then
	/sbin/service postfix condrestart 2>&1 > /dev/null
fi
exit 0