PHP Mail()

[jonwcode]

So I'm working on a register form right now for my users can login to my site. So anyways, when I try and send out a activation email, my Ubuntu server isn't sending any emails out with the PHP function. I have PHP installed, and postfix install on my server right now. I'm using a DNS. I'm new to ubuntu, and I'm not to sure if I'm setting up everything right to do this. I tried reading the postfix setup guide but I'm kinda confused where I start... lol So what do I have to do to setup my postfix email server so that I can send out emails with the PHP mail()?

Host File:

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127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

-----------------------------------------------------------------

If you need any other files just let me know.

[askreet]

Are you sitting on a residential cable line, such as Comcast? A lot of companies don't let you send mail out by yourself. They provide SMTP servers you can configure postfix to send to using the "relayhost = " parameter.

My comcast has to use authenticated SMTP, which I did a quick google to figure out how to configure postfix to log into the SMTP server before delivering my message.

Hope this helps.