MoinQ: spam/対策/rblsmtpd/dig/dnscache

これはFreeBSD

%dig -t txt 233.15.0.37.zen.spamhaus.org                                ~

; <<>> DiG 9.12.1 <<>> -t txt 233.15.0.37.zen.spamhaus.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13493
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;233.15.0.37.zen.spamhaus.org.  IN      TXT

;; ANSWER SECTION:
233.15.0.37.zen.spamhaus.org. 60 IN     TXT     "https://www.spamhaus.org/sbl/query/SBL538362"
233.15.0.37.zen.spamhaus.org. 60 IN     TXT     "https://www.spamhaus.org/query/ip/37.0.15.233"

;; Query time: 838 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Mar 25 20:02:21 JST 2022
;; MSG SIZE  rcvd: 161

1. Ubuntu でのdnscache

$ dig -t txt 233.15.0.37.zen.spamhaus.org @127.0.0.1

; <<>> DiG 9.11.3-1ubuntu1.16-Ubuntu <<>> -t txt 233.15.0.37.zen.spamhaus.org @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61915
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;233.15.0.37.zen.spamhaus.org.  IN      TXT

;; ANSWER SECTION:
233.15.0.37.zen.spamhaus.org. 60 IN     TXT     "https://www.spamhaus.org/sbl/query/SBL538362"
233.15.0.37.zen.spamhaus.org. 60 IN     TXT     "https://www.spamhaus.org/query/ip/37.0.15.233"

;; Query time: 120 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Mar 25 20:16:12 JST 2022
;; MSG SIZE  rcvd: 161

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