Daily Archives: 07.12.2009


Postfix spam prevention with simple means

I've published already quite a few tutorials on greylisting, rbls and so on. Here's another tutorial showing how you can reduce your spam with rather simple means. First of all we need to edit the file /etc/postfix/main.cf and add those lines: smtpd_helo_required     = yes strict_rfc821_envelopes = yes disable_vrfy_command = yes unknown_address_reject_code  = 554 […]


Integrating Postgrey into Postfix (Greylisting Filter)

In this article I'm going to show the simple integration of Postgrey into a postfix. The installation of postgrey is done like this: apt-get install postgrey Then you should (but it's not needed) customize a little bit its configuration file /etc/default/postgrey, which contains: POSTGREY_OPTS="–inet=127.0.0.1:60000" #Postgrey uses the port 60000 locally POSTGREY_TEXT="Greylisted" #This parameter is optional […]