Send-Only Mail Server – How to Set Up a Send-Only Mail Server

14.04mail-serversmtp

I'm trying to setup an easy mail server to support my "lost password" function in my website.

I'd like to know if Exim is good or not, or is there any better solution?

I would also like to know that it isn't easy to manage an smtp server (such as blocking junk mail, or being hacked, etc), does setting up a send-only mail server cause any security issues?

Thanks!

Best Answer

Simple example to setup postfix with satellite SMTP

  1. install postfix

    sudo aptitude install postfix

  2. configure postfix

    sudo vi /etc/postfix/smtp_auth

    add your smtp authentication information in /etc/postfix/smtp_auth:

    smtp.foo.bar user@host:password

    and generate the postfix lookup table file (/etc/postfix/smtp_auth.db) using

    sudo postmap /etc/postfix/smtp_auth

    add the relayhost (outgoing smtp server e.g. smtp.foo.bar on port 587, depending your relay host info) information to /etc/postfix/main.cf:

    relayhost = [smtp.foo.bar]:587

    add the following lines to /etc/postfix/main.cf in order to enable smtp-auth for outgoing mails:

    smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/smtp_auth smtp_sasl_security_options = noanonymous

  3. restart postfix

    sudo service postfix restart

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