freebsd安装及安全使用SSMTP

第一步：ee /ec/rc.conf中加入

sendmail_enable=”NO”

sendmail_submit_enable=”NO”

sendmail_outbound_enable=”NO”

sendmail_msp_queue_enable=”NO”
killall sendmail

第二步：安装ssmtp:

pkg install ssmtp

ee /etc/mail/mailer.conf

sendmail /usr/libexec/sendmail/sendmail
send-mail /usr/libexec/sendmail/sendmail
mailq /usr/libexec/sendmail/sendmail
newaliases /usr/libexec/sendmail/sendmail
hoststat /usr/libexec/sendmail/sendmail
purgestat /usr/libexec/sendmail/sendmail
to

sendmail /usr/local/sbin/ssmtp
send-mail /usr/local/sbin/ssmtp
mailq /usr/libexec/sendmail/sendmail
newaliases /usr/libexec/sendmail/sendmail
hoststat /usr/libexec/sendmail/sendmail
purgestat /usr/libexec/sendmail/sendmail
第三步：创建ssmtp用户

pw useradd ssmtp -g nogroup -h – -s /sbin/nologin -d /nonexistent -c “sSMTP pseudo-user”

第四步：

cd /usr/local/etc/ssmtp

chown ssmtp:wheel .

chmod 4750 .

第五步：

cp ssmtp.conf.sample ssmtp.conf

chown ssmtp:wheel . ssmtp.conf

chmod 640 ssmtp.conf

第六步：编辑ssmtp.conf文件

mailhub=smtp.exmail.qq.com:465
UseTLS=YES
AuthUser=from@mydomain.com
AuthPass=123456
FromLineOverride=YES
Hostname=serverkvm
RewriteDomain=exmail.qq.com
Root=postmaster
cp revaliases.sample revaliases

root:from@mydomain.com:smtp.exmail.qq.com:465
from:from@mydomain.com:smtp.exmail.qq.com:465
chown ssmtp:nogroup /usr/local/sbin/ssmtp
chmod 4555 /usr/local/sbin/ssmtp

测试：echo “test” | mail -v -s “test mail” your_mail@domain.com