Gordon Messmer writes:
I was checking the RBL queries and answers on a server this morning, when I noticed this in the responses: Please stop asking for ANY.See draft-ietf-dnsop-refuse-anyBoth spamhaus and abuseat provide this text in their replies to Courier's RBL lookups. Is it worth considering A and TXT record lookups rather than ANY, given the request to stop sending requests for ANY result? Might that request indicate that requests for ANY will not be supported in the future?
Right now you can explicitly specify a message, to issue an A query: "-block=zen.spamhaus.org,Go away!" and this will result in an A query instead of an ANY.ANY was a convenient way to get both an IP address code from the blocklist, as well as the blacklist-provided custom message.
The referenced document is a general DNS document, not particular to blacklists. But, because they're returning this response, this means they're on board with this, and don't want ANY requests. Have to respect that.
I'll change the logic to always request for A record, unless the custom message is explicitly set to '*', which will result in a TXT query.
In the long run this will be counterproductive, since the existing blacklists will now result in a generic "Access denied." bounces, instead of the blacklist-provided message that will point back to the blacklist. But, it's their decision to make.
pgp7NNXww7zjl.pgp
Description: PGP signature
------------------------------------------------------------------------------ Announcing the Oxford Dictionaries API! The API offers world-renowned dictionary content that is easy and intuitive to access. Sign up for an account today to start using our lexical data to power your apps and projects. Get started today and enter our developer competition. http://sdm.link/oxford
_______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
