Re: SMTP_AUTH + RBLs

[Ken Jones <kbo@inter7.com>]

Fabio Busatto wrote:
> Probably you're talking about my patch:
>
> http://qmail-dnsbl.sourceforge.net/
>
> This is:
> - well written (obviously :), using djb's coding style
> - based only on original qmail code (you don't need to
>   use an external resolve library, there is the qmail
>   resolve library of course
> - configurable with a file in qmail control directory
>   (accessed through the original qmail control files
>   functions)
> - skipped using environment variables (to allow you
>   choose using tcprules files
> - quite intrusive (only a couple of lines in original
>   qmail code, plus the function on its own
> - provided with patches for manpages and qmail-showctl
>
> I used it for months, and it feels good, and nobody has
> reported bugs by now.
>
> By the way other solutions (like the alternate port) can
> be better, depending from the context. I prefer open only
> 25 on my firewall and provide dnsbl bypass for my authed
> users instead of setup a new tcpserver instance.
Nice code!

We are using something similar to your code with great results.
It lets us use RBL's that include end user IPs like
zen.spamhaus.org with out blocking valid customers.

--
Ken Jones