spam: [FUG-BR] "mail for XXX loops back to myself"

[Tiago Cruz]

Pessoal,

esse erro do postfix é um tanto quanto documentado, mas me deparei com
uma situação inusitada onde eu gostaria de um help de vocês:

[root em VADER:/home/tiago]# host -v lead-off-japan.co.jp
Trying "lead-off-japan.co.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9318
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;lead-off-japan.co.jp.          IN      A

;; ANSWER SECTION:
lead-off-japan.co.jp.   66      IN      A       72.51.27.51

;; AUTHORITY SECTION:
lead-off-japan.co.jp.   85419   IN      NS      ns.lead-off-japan.co.jp.
lead-off-japan.co.jp.   85419   IN      NS      ns04.pwd.com.

;; ADDITIONAL SECTION:
ns.lead-off-japan.co.jp. 85419  IN      A       210.253.150.33
ns04.pwd.com.           6224    IN      A       72.51.27.54

Received 129 bytes from 200.152.202.14#53 in 0 ms
Trying "lead-off-japan.co.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18196
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;lead-off-japan.co.jp.          IN      AAAA

;; AUTHORITY SECTION:
lead-off-japan.co.jp.   10118   IN      SOA     ns1.hitfarm.com. hostmaster.hitfarm.com. 1141307021 10800 3600 604800 7200

Received 100 bytes from 200.152.202.14#53 in 0 ms
Trying "lead-off-japan.co.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22929
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;lead-off-japan.co.jp.          IN      MX

;; ANSWER SECTION:
lead-off-japan.co.jp.   6248    IN      MX      10 nullmx.lead-off-japan.co.jp.

;; AUTHORITY SECTION:
lead-off-japan.co.jp.   85419   IN      NS      ns04.pwd.com.
lead-off-japan.co.jp.   85419   IN      NS      ns.lead-off-japan.co.jp.

;; ADDITIONAL SECTION:
nullmx.lead-off-japan.co.jp. 6248 IN    A       127.0.0.1
ns.lead-off-japan.co.jp. 85419  IN      A       210.253.150.33
ns04.pwd.com.           6224    IN      A       72.51.27.54

Received 152 bytes from 200.152.202.14#53 in 0 ms

Reparem no nullmx.lead-off-japan.co.jp. que realmente aponta para
127.0.0.1!!!! E agora? Será que isso é algo anti-spam desses japoneses
malucos?

Grato!

-- 
Tiago Cruz
http://linuxrapido.org


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