Template:Configuration - DNSBL
From ASSPSMTP
based upon version 1.3.5(9.18) Enable DNS Blacklist Validation (ValidateRBL)
This requires an installed Net::DNS module in PERL. 0 = disabled, 1 = block, 2 = monitor, 3 = score
Don't do DNSBL for these IPs* (noRBL)
Enter IP addresses that you don't want to be DNSBL validated, separated by pipes (|). For example: 127.0.0.1|192.168.
Whitelisted DNSBL Validation (RBLWL) Enable DNSBL for whitelisted users also
Add X-Assp-Received-DNSBL Header (AddRBLHeader) Add X-Assp-Received-DNSBL header to messages with positive reply from DNSBL.
DNSBL Failed Reply (RBLError)
SMTP reply for DNSBL failed messages. Default: '554 5.7.1 DNS Blacklisted by RBLLISTED' The literal RBLLISTED (case sensitive) is replaced by the actual serviceproviders(s).
RBL Service Providers* wiki (RBLServiceProvider)
Domain Names of DNSBLs to use separated by "|". Defaults are... zen.spamhaus.org|ix.dnsbl.manitu.net|bl.spamcop.net|karmasphere.email-sender.dnsbl.karmasphere.com|list.dsbl.org|dul.dnsbl.sorbs.net|blackholes.five-ten-sg.com You may test if a more conservative approach like zen.spamhaus.org|list.dsbl.org|dul.dnsbl.sorbs.net is better for your environment. In that case set accordingly Maximum Replies to 3 and Maximum Hits to 1. If you want to use karmasphere you must establish an account there.
Maximum Replies (RBLmaxreplies)
A reply is affirmative or negative reply from a DNSBL. The DNSBL module will wait for this number of replies (negative or positive) from the DNSBLs listed under Service Provider for up to the Maximum Time(RBLmaxtime). This number should be equal to or less than the number of DNSBL Service Providers listed to allow for randomly unavailable DNSBLs
Maximum Hits (RBLmaxhits)
A hit is an affirmative response from a DNSBL. The DNSBL module will check all of the DNSBLs listed under Service Provider, and flag the email with a DNSBL failure flag if at least this number of DNSBLs return a positive blacklisted response. This number should be less than or equal to Maximum Replies(RBLmaxreplies) and greater than 0. If the number of hits is greater or equal Maximum Hits, the email is flagged failed. If the number of hits is greater 0 and less Maximum Hits, the email is flagged neutral
Maximum Time (RBLmaxtime)
This sets the maximum time in seconds to spend on each message performing DNSBL checks. Default is 15.
Socket Timeout (RBLsocktime)
This sets the DNSBL socket read timeout in seconds.
DNSBL Cache Refresh Interval (RBLCacheInterval)
IP's in cache will be removed after this interval in days. 0 will disable the cache. Empty or 0 disables the cache.
Enforce Early DNSBL Check (ForceRBLCache) If set, ASSP will use DNSBL cache hits to block the failed IP's before DELAYING kicks in. Collecting, Testmode, CopySpam, Spam-Lover will be ignored.
