Unlike other DNS block lists, this one supports domain name queries only and does not support IP address queries at all. They recommend using it to check URIs in the message content as well as headers.
In particular find in the FAQ the following statement:
You must not put 'dbl.spamhaus.org' into any email server 'DNSBL' or 'RBLs' feature, spam firewall or spam filter unless it specifically states that blocklists entered there are used for domain checking only. If you are unsure, ask your spam filter developer.
Five Months for the appearance of a completely off-the-wall response to, basically, a yes/no question....anyone want to place bets on something effectual actually appearing here?
the answer to your question is definitely no, AsyncOS for the Cisco IronPort Email appliances currently does not support Spamhaus DBL - as you already pointed out correctly it's using a different format of queries/response than the usual external blacklist that can be figured in the HAT. Can't tell you about the Roadmap, but it is certainly under consideration. I have checked if there is any feature request on this so far, also negative, so feel free to open a ticket with support to have one filed, as these are monitored by product management as well.
DocumentationCode download linksGoalRequirementLimitationsSupported ISR
and UCS-E ModelSupported ISRG2 and UCS-E Blades:Supported ISR4K and
UCS-E Blades:Step by Step ConfigurationConfigure one of the connectivity
options to access the Cisco IMC from the n...
Firepower Threat Defense (NGFWv) on UCS E-series - Transparent Mode in
HA DocumentationCode download linksGoalRequirementLimitationsSupported
ISR and UCS-E ModelSupported ISRG2 and UCS-E Blades:Supported ISR4K and
UCS-E Blades:Step by Step ConfigurationCo...
Question I am currently unable to specify "crypto keyring" command when
configuring VPN connection on my cisco 2901 router. The following
licenses have been activated on my router :