Name servers - nameservers
The IP addresses to use as name servers. If this is empty the application will default to using the /etc/resolv.conf file.
Default: Empty
Use TCP - use_tcp
Use TCP instead of UDP for DNS queries. UDP is faster, but is limited in size. DNS lookups will automatically use TCP for zone transfers (AXFR) and when a response was truncated.
Default: FALSE
Strict query mode - strict_query_mode
If the hostname that was looked up is not actually in the answer section of the response, the DNS lookup will return an empty answer section,
instead of an answer section that could contain CNAME records.
Default: FALSE
Randomize name servers - ns_random
Randomize the name servers list each time it is used.
Default: FALSE
DNS port - dns_port
The UDP/TCP port to use when making DNS queries.
Default: 53
Timeout - timeout
Timeout value to use for socket connections (in seconds).
Default: 5
Cache type - cache_type
The type of cache to use.
Default: none
Cache size - cache_size
The number of bytes the application is allowed to use as a DNS cache (in bytes).
Default: 1048576
Blacklists - blacklists
The dns blacklists to use when performing DNS based blacklist checks.
Default: zen.spamhaus.org, bl.spamcop.net, b.barracudacentral.org , bl.score.senderscore.com, cidr.bl.mcafee.com, dnsbl.forefront.microsoft.com, bogons.cymru.com, scbl.abuseat.org, all.spamrats.com
AbuseIPDB API key - abuseipdb_api_key
The API key required to use the AbuseIPDB IP address reputation service.
Default: empty
AbuseIPDB cache - abuseipdb_cache
Cache AbuseIPDB lookups for this long (in minutes). This can help lower API usage. Setting this to 0 will disable the cache.
Default: 240 minutes
Block reporting - abuseipdb_block_reporting
Report login failure blocks to AbuseIPDB. This will change the firewall option under Settings -> Reporting & Alerts -> Block reporting script (BLOCK_REPORT) so that the login failure daemon will submit blocks to AbuseIPDB.
Default: false