RBL server

[gerinn]

Hi,

I want to write my own blackhole list for my Mailserver so that the only thing i have to do in postfix is reject_rbl_client <myBlackholeList> . I want to write it in C#

Since the Mailserver is already in use I can't use it to test my code. So I thought with nslookup I can simulate my postfix-request.

Am I'm right that the postfix request is sent by a UDP-packet?

I played around with the code for quite a while now, but my blacklist server is receiving nothing from nslookup.

What do I have to do get it work?

Thanks,
Gernot

 

[jkupski]

You're writing your own DNS server just to implement blacklisting in a local RBL...?

If you really want to maintain an RBL instead of just using a hashed list of blacklisted domains, why not just maintain it in BIND or the DNS server built into Win2k/Win2k3?