Patterns for NullMX: RFC7505

[azumakuniyuki]

Patterns to be implemented at

• Sisimai::MTA::*
• Sisimai::MSP::*
• Sisimai::CED::*
• Sisimai::Reason::NotAccept

NullMX

% dig mx libsisimai.org

; <<>> DiG 9.8.3-P1 <<>> mx libsisimai.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57814
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;libsisimai.org.            IN  MX

;; ANSWER SECTION:
libsisimai.org.     300 IN  MX  0 .

;; Query time: 299 msec
;; SERVER: 172.31.127.254#53(172.31.127.254)
;; WHEN: Sun Dec 25 21:33:14 2016
;; MSG SIZE  rcvd: 47

See also

• https://tools.ietf.org/html/rfc7505
• https://heartbeats.jp/hbblog/2016/12/null-mx.html

• 128 RFC7505(X.1.10 and X.7.27)

  Dec 1 12:34:56 postfix31 postfix/smtp[3333]: 8A9C342533: to=, relay=none, delay=0.06, delays=0/0.01/0.05/0, dsn=5.1.0, status=bounced (Domain example.com does not accept mail (nullMX))

[azumakuniyuki]

• Sendmail 8.15.2 does not support RFC7505 (hostunknown)
• OpenSMTPD 6.0.2p1 does not support RFC7505 (expired)

[azumakuniyuki]

This issue have been moved to sisimai/set-of-emails#4