Kamaelia: Grey

What is Kamaelia: Grey ?

It's a greylisting SMTP proxy. It doesn't replace your existing mail server, but does sit between your mail server and the outside world.

How do I install it?

After unpacking, as root, type:

• python setup.py install

Under linux you then type:

• chmod +x /etc/init.d/kamaeliagrey

The code was developed under linux, but is currently acting as a workhorse under Mac OS X. As a result a startup script for Mac OS X is also included - take a look in the setup.py file to see what you need to edit.

How do I configure it?

Copy the default config file - installed to /etc/greylist.conf.dist to a localised version - ie /etc/greylist.conf

You then edit the freshly copied config file. The config options are documented in the config file.

How does it work then?

Suppose your existing mailserver:

• listens on port 25
• runs on host 192.168.2.25

You change your mailserver to listen on some other port instead. eg 8025
You then configure Kamaelia:Grey to listen on port 25 instead, on that host
You also configure Kamaelia:Grey to forward to your mail server

How do I configure that?

Edit /etc/greylist.conf
Change the values smtp_ip & smtp_port
eg change them to:

smtp_ip = 192.168.2.25

smtp_port = 8025

Where can I get more information?

Information will be added to this page:

• http://kamaelia.sourceforge.net/KamaeliaGrey

Discussion and feedback should be sent to kamaelia-list@lists.sourceforge.net

What on Earth is Greylisting?

Without apologies, here's a link to a non-techie description of greylisting:

• http://yeoldeclue.com/cgi-bin/blog/blog.cgi?rm=viewpost&nodeid=1185836589

More detail on how Kamaelia: Grey works: (this should get consolidated onto this page)

• http://yeoldeclue.com/cgi-bin/blog/blog.cgi?rm=viewpost&nodeid=1190238560

More! More! I want to understand more!

OK, OK, how about a presentation?