I have been enumerating the remaining security concerns on one of my back-end production servers, when I came to the realization that something which could be incredibly useful was missing from my ...
I have the following ACL with Exim4: acl_check_rcpt: deny message = DNSRBL Access denied - $sender_host_address \ listed by $dnslist_domain\n$dnslist_text dnslists ...
Is there any advantage or disadvantage to using multiple DNSBL's with ones connection filtering? I just switched from SpamHaus to BarracudaCentral but have added in SpamHaus to test for increased ...
I'm trying to setup my own custom dnsbl server for blocking spam. I have successfully created a server running rbldnsd but am curious about what DNS records I would need to have in place so that my ...
I'm preparing to build a publicly accessible DNSBL server. Which Linux distribution would you recommend for something like this? I'm mainly interested in: 1) General security. 2) Stability. 3) ...