如何檢查某些網站的MX/SOA rcords

Question

我喜歡爲某些網站找到MX。

我想是這樣www.yahoo.com MX在 ，但我無法找到mail.yahoo.com

任何想法？

Answer 1

$ dig yahoo.com MX 
; <<>> DiG 9.8.3-P1 <<>> yahoo.com MX 
;; global options: +cmd 
;; Got answer: 
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20645 
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0 

;; QUESTION SECTION: 
;yahoo.com.   IN MX 

;; ANSWER SECTION: 
yahoo.com.  269 IN MX 1 mta5.am0.yahoodns.net. 
yahoo.com.  269 IN MX 1 mta7.am0.yahoodns.net. 
yahoo.com.  269 IN MX 1 mta6.am0.yahoodns.net. 

;; Query time: 64 msec 
;; SERVER: 8.8.8.8#53(8.8.8.8) 
;; WHEN: Sat Mar 9 18:51:14 2013 
;; MSG SIZE rcvd: 106