I need to provide 3 SMTP servers for clients to use for printers and scanners that require an SMTP server to send email out, they will be load balanced with DNS round robin. All I need it to do is send out email as an open relay (it will be behind a firewall). I have yet to find documentation on how to do this easily.
closed as not constructive by Sven, mdpc, dyasny, Scott Pack, Falcon Momot Jun 25 '13 at 18:54
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Ubuntu postfix is about as easy and simple as it gets:
To install Postfix run the following command:
Simply press return when the installation process asks questions, the configuration will be done in greater detail in the next stage.
To configure postfix, run the following command:
The user interface will be displayed. On each screen, select the following values:
Now is a good time to decide which mailbox format you want to use. By default Postfix will use mbox for the mailbox format. Rather than editing the configuration file directly, you can use the postconf command to configure all postfix parameters. The configuration parameters will be stored in
To configure the mailbox format for Maildir:
This will place new mail in