E-mail

Following on from postfix - blocking spam before it enters the server i setup a whitelist and SPF filtering.

The whitelist will allow me to manually allow any mail servers to bypass the spf filtering and RBL(Real-time Blacklists) lists.

When i first setup the server part 1 and part 2 i used the basic setting for postfix but soon found that i could reduce the amount of spam and load on the server by rejecting it before accepting it, i will do this by forcing mail servers that wanna deliver mail to me to be configured correctly and by using a few RBL (Real-time Blacklists).