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3answers
54 views

is there a PAM module for DNSBL lookups?

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 ...
1
vote
1answer
180 views

How to skip DNSBL checks for authenticated main in Exim4

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 ...
1
vote
1answer
55 views

Connection Filtering with Multiple DNSBL's?

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 ...
0
votes
2answers
390 views

What DNS Records / Zones are required for setting up a dnsbl server?

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 ...
0
votes
2answers
189 views

DNSBL Server - Linux Distribution Recommendations?

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) ...