On 6 Feb 2006, at 13:34, Philip Hazel wrote:

The reason for the existence of dns_check_names_pattern is that some
resolvers give (gave?) temporary errors instead of "no such record" when
presented with a name containing "strange" characters. There shouldn't
actually be a need for dns_check_names_pattern.

this is enough for me to put
dns_check_names_pattern =
as my resolver (tested with dig)
returns NXDOMAIN. I am not sure this will be a guarantee of any sort, as the temporary error might sneak in from another server if the character is legal but does confuse the target
server.
Atch, I though I would test this against microsoft so I typed:

dig p/d.microstoft.com
;; QUESTION SECTION:
;p/d.microstoft.com.            IN      A

;; ANSWER SECTION:
p/d.microstoft.com.     3600    IN      A       64.49.213.238

what the...? (you'll find that it's just a wildcard record.)

With dns_check_names_pattern my ACL works as expected. Now it's just a question of
waiting for some more spam to get that far...

g

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