debian/sarge下面简单邮件系统配置：smtp+auth+tls+pop/imap

摘要

debian/sarge下面简单邮件系统配置：smtp+auth+tls+pop/imap

debian/sarge下面简单邮件系统配置：smtp+auth+tls+pop/imap

* Linux

作者 linuxman @ 2006-04-04 09:41:20
这里使用passwd/shadow文件作为用户验证，没有使用数据库：

Postfix

In order to install Postfix with SMTP-AUTH and TLS do the following steps:

apt-get install postfix postfix-tls libsasl2 sasl2-bin libsasl2-modules libdb3-util procmail (1 line!)dpkg-reconfigure postfix

<- Internet Site
<- NONE
<- server1.example.com
<- server1.example.com, localhost.example.com, localhost
<- No
<- 127.0.0.0/8
<- 0
<- +

postconf -e ''smtpd_sasl_local_domain =''
postconf -e ''smtpd_sasl_auth_enable = yes''
postconf -e ''smtpd_sasl_security_options = noanonymous''
postconf -e ''broken_sasl_auth_clients = yes''
postconf -e ''smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination''
postconf -e ''inet_interfaces = all''
echo ''pwcheck_method: saslauthd'' >> /etc/postfix/sasl/smtpd.conf
echo ''mech_list: plain login'' >> /etc/postfix/sasl/smtpd.conf

mkdir /etc/postfix/ssl
cd /etc/postfix/ssl/
openssl genrsa -des3 -rand /etc/hosts -out smtpd.key 1024
chmod 600 smtpd.key
openssl req -new -key smtpd.key -out smtpd.csr
openssl x509 -req -days 3650 -in smtpd.csr -signkey smtpd.key -out smtpd.crt
openssl rsa -in smtpd.key -out smtpd.key.unencrypted
mv -f smtpd.key.unencrypted smtpd.key
openssl req -new -x509 -extensions v3_ca -keyout cakey.pem -out cacert.pem -days 3650

postconf -e ''smtpd_tls_auth_only = no''
postconf -e ''smtp_use_tls = yes''
postconf -e ''smtpd_use_tls = yes''
postconf -e ''smtp_tls_note_starttls_offer = yes''
postconf -e ''smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key''
postconf -e ''smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt''
postconf -e ''smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem''
postconf -e ''smtpd_tls_loglevel = 1''
postconf -e ''smtpd_tls_received_header = yes''
postconf -e ''smtpd_tls_session_cache_timeout = 3600s''
postconf -e ''tls_random_source = dev:/dev/urandom''
postconf -e ''myhostname = server1.example.com''

The file /etc/postfix/main.cf should now look like this:

# See /usr/share/postfix/main.cf.dist for a commented, more complete version

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUA''s job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

myhostname = server1.example.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = server1.example.com, localhost.example.com, localhost
relayhost =
mynetworks = 127.0.0.0/8
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
mailbox_command =
smtpd_sasl_local_domain =
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
smtpd_tls_auth_only = no
smtp_use_tls = yes
smtpd_use_tls = yes
smtp_tls_note_starttls_offer = yes
smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom

/etc/init.d/postfix restart

Authentication will be done by saslauthd. We have to change a few things to make it work properly. Because Postfix runs chrooted in /var/spool/postfix we have to do the following:

mkdir -p /var/spool/postfix/var/run/saslauthd
rm -fr /var/run/saslauthd

Now we have to edit /etc/default/saslauthd in order to activate saslauthd. Remove # in front of START=yes and add the line PARAMS="-m /var/spool/postfix/var/run/saslauthd":

# This needs to be uncommented before saslauthd will be run automatically
START=yes

PARAMS="-m /var/spool/postfix/var/run/saslauthd"

# You must specify the authentication mechanisms you wish to use.
# This defaults to "pam" for PAM support, but may also include
# "shadow" or "sasldb", like this:
# MECHANISMS="pam shadow"

MECHANISMS="pam"

Finally we have to edit /etc/init.d/saslauthd. Change the line

dir=`dpkg-statoverride --list $PWDIR`

to

#dir=`dpkg-statoverride --list $PWDIR`

Then change the variables PWDIR and PIDFILE and add the variable dir at the beginning of the file:

PWDIR="/var/spool/postfix/var/run/${NAME}"
PIDFILE="${PWDIR}/saslauthd.pid"
dir="root sasl 755 ${PWDIR}"

/etc/init.d/saslauthd should now look like this:

#!/bin/sh -e

NAME=saslauthd
DAEMON="/usr/sbin/${NAME}"
DESC="SASL Authentication Daemon"
DEFAULTS=/etc/default/saslauthd
PWDIR="/var/spool/postfix/var/run/${NAME}"
PIDFILE="${PWDIR}/saslauthd.pid"
dir="root sasl 755 ${PWDIR}"

createdir() {
# $1 = user
# $2 = group
# $3 = permissions (octal)
# $4 = path to directory
[ -d "$4" ] || mkdir -p "$4"
chown -c -h "$1:$2" "$4"
chmod -c "$3" "$4"
}

test -f "${DAEMON}" || exit 0

# Source defaults file; edit that file to configure this script.
if [ -e "${DEFAULTS}" ]; then
. "${DEFAULTS}"
fi

# If we''re not to start the daemon, simply exit
if [ "${START}" != "yes" ]; then
exit 0
fi

# If we have no mechanisms defined
if [ "x${MECHANISMS}" = "x" ]; then
echo "You need to configure ${DEFAULTS} with mechanisms to be used"
exit 0
fi

# Add our mechanimsms with the necessary flag
PARAMS="${PARAMS} -a ${MECHANISMS}"

START="--start --quiet --pidfile ${PIDFILE} --startas ${DAEMON} --name ${NAME} -- ${PARAMS}"

# Consider our options
case "${1}" in
start)
echo -n "Starting ${DESC}: "
#dir=`dpkg-statoverride --list $PWDIR`
test -z "$dir" || createdir $dir
if start-stop-daemon ${START} >/dev/null 2>&1 ; then
echo "${NAME}."
else
if start-stop-daemon --test ${START} >/dev/null 2>&1; then
echo "(failed)."
exit 1
else
echo "${DAEMON} already running."
exit 0
fi
fi
;;
stop)
echo -n "Stopping ${DESC}: "
if start-stop-daemon --stop --quiet --pidfile "${PIDFILE}"
--startas ${DAEMON} --retry 10 --name ${NAME}
>/dev/null 2>&1 ; then
echo "${NAME}."
else
if start-stop-daemon --test ${START} >/dev/null 2>&1; then
echo "(not running)."
exit 0
else
echo "(failed)."
exit 1
fi
fi
;;
restart|force-reload)
$0 stop
exec $0 start
;;
*)
echo "Usage: /etc/init.d/${NAME} {start|stop|restart|force-reload}" >&2
exit 1
;;
esac

exit 0

Now start saslauthd:

/etc/init.d/saslauthd start

To see if SMTP-AUTH and TLS work properly now run the following command:

telnet localhost 25

After you have established the connection to your postfix mail server type

ehlo localhost

If you see the lines

250-STARTTLS

and

250-AUTH

everything is fine.

Type

quit

to return to the system''s shell.

Courier-IMAP/Courier-POP3

Install Courier-IMAP/Courier-IMAP-SSL (for IMAPs on port 993) and Courier-POP3/Courier-POP3-SSL (for POP3s on port 995).

apt-get install courier-authdaemon courier-base courier-imap courier-imap-ssl courier-pop courier-pop-ssl courier-ssl gamin libgamin0 libglib2.0-0 (one line!)

<- No
<- OK

Then configure Postfix to deliver emails to a user''s Maildir:

postconf -e ''home_mailbox = Maildir/''
postconf -e ''mailbox_command =''
/etc/init.d/postfix restart