╰─$ dig github.com -t MX

; <<>> DiG 9.13.0 <<>> github.com -t MX
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44313
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 6

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
; COOKIE: 6e89ea1bfb4d24ec (echoed)
;; QUESTION SECTION:
;github.com.			IN	MX

;; ANSWER SECTION:
github.com.		841	IN	MX	10 alt4.aspmx.l.google.com.
github.com.		841	IN	MX	5 alt1.aspmx.l.google.com.
github.com.		841	IN	MX	5 alt2.aspmx.l.google.com.
github.com.		841	IN	MX	1 aspmx.l.google.com.
github.com.		841	IN	MX	10 alt3.aspmx.l.google.com.

;; ADDITIONAL SECTION:
alt4.aspmx.l.google.com. 154	IN	A	74.125.195.27
alt4.aspmx.l.google.com. 4	IN	AAAA	2607:f8b0:400e:c09::1a
alt2.aspmx.l.google.com. 63	IN	A	74.125.24.26
aspmx.l.google.com.	23	IN	AAAA	2a00:1450:400c:c07::1a
alt3.aspmx.l.google.com. 4	IN	AAAA	2404:6800:4008:c01::1b

;; Query time: 13 msec
;; SERVER: 172.21.103.5#53(172.21.103.5)
;; WHEN: ven. juin 08 10:07:20 CEST 2018
;; MSG SIZE  rcvd: 282