I have a linux server, with postfix just installed.
I am new to email-servers...
Anyways, I am able to send mail with php:s mail function, but they are considered "spam" by google mail (and probably most other email accounts also, haven't tested hotmail, yahoo etc).
I am guessing it has something to do with SPF, but I don't have a clue what SPF is, how to fix it etc etc...
Can anybody explain how to make my emails "Non-spam" which they are not?
OS is Ubuntu 9.10.
If you need more input let me know...
Thanks
PS: How can I disable all incoming mail to my postfix (email server) without using my firewall, maybe by using main.cf?
