Postfix: http://www.postfix.org
OpenSSL: http://www.openssl.org
Configure:
make -f Makefile.init makefiles
AUXLIBS="-L/usr/lib/mysql -lmysqlclient -lz -lm -L/home/postfix/sasl/lib -lsasl2 -L/usr/lib -lssl -lcrypto"
CCARGS='-DRECEIVED_ENVELOPE_FROM -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/home/postfix/sasl/include/sasl
-DUSE_TLS -I/usr/include/openssl -I/usr/kerberos/include
-DHAS_MYSQL -I/usr/include/mysql
-DDEF_COMMAND_DIR=\"/home/postfix/sbin\"
-DDEF_DAEMON_DIR=\"/home/postfix/libexec\"
-DDEF_PROGRAM_DIR=\"/home/postfix/libexec\"
-DDEF_QUEUE_DIR=\"/home/postfix/spool\"
-DDEF_CONFIG_DIR=\"/home/postfix/etc\"
-DDEF_SENDMAIL_PATH=\"/home/postfix/sbin/sendmail\"
-DDEF_MAILQ_PATH=\"/home/postfix/bin/mailq\"
-DDEF_NEWALIAS_PATH=\"/home/postfix/bin/newaliases\"
-DDEF_SAMPLE_DIR=\"/home/postfix/doc/sample\"'
OPT='-O2'
Install:
make || exit 2
sh postfix-install -non-interactive
install_root=/
config_directory=/home/postfix/etc
daemon_directory=/home/postfix/libexec
command_directory=/home/postfix/sbin
queue_directory=/home/postfix/spool
sendmail_path=/home/postfix/sbin/sendmail
newaliases_path=/home/postfix/bin/newaliases
mailq_path=/usr/bin/mailq
mail_owner=postfix
setgid_group=postdrop
manpage_directory=/home/postfix/man
sample_directory=/home/postfix/doc/sample
readme_directory=/home/postfix/doc/README_FILES
生成证书：
mkdir /home/postfix/etc/tls cd /home/postfix/etc/tls openssl req -new -x509 -nodes -out cert.pem chown root:postfix * chmod 640 * cd ..
配置文件main.cf
#smtpd-tls smtpd_tls_cert_file = $config_directory/tls/cert.pem smtpd_tls_key_file = $config_directory/tls/privkey.pem smtpd_use_tls = yes tls_random_source = dev:/dev/urandom tls_daemon_random_source = dev:/dev/urandom #smtpd_tls_auth_only = yes
启动smtps的守护进程
smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes -o smtpd_tls_auth_only=yes
smtpd-tls-auth-only是指只有在安全传输的情况下，才可以认证。
大功告成，postfix reload后开始测试吧。