I want an outgoing mail server ONLY for multiple domains. I plan to use Postfix as that seems to be the easiest to setup being very new to Ubuntu/Linux.
The setup I plan to have are as follows:
- I want to use virtual domain with postfix i.e. my multiple websites must be able to send an email from each their respective domains i.e. firstname.lastname@example.org is sent from my domain1.com website and email@example.com is sent from domain2.com website
- This is an outgoing mail server only i.e. I don't want any returned (or otherwise) email sent to my postfix server.
- Incoming mail is handled by Google Apps/Gmail and is already setup.
- I already set my SPF recording to designate my mx records and postfix server ip as valid email servers i.e. "v=spf1 mx include:mydomain.com -all"
How can I achieve this? I'm frankly a little confused, so some help would be appreciated.
I attempted to follow these guides here, but it doesn't seem right (and it isn't clear what all the settings mean):
How to configure Postfix virtual domains http://www.sysdesign.ca/guides/postfix_virtual.html
Postfix Installation *.slicehost.com/2008/7/29/postfix-installation
Basic Postfix settings (main.cf) *.slicehost.com/2008/7/31/postfix-basic-settings-in-main-cf
I can only post one link, but those articles above can be found by replacing * with articles in the hyperlink.