chateau.d.if!abbe:~ % dig aaaa smtp.gmail.com

; <<>> DiG 9.6.-ESV-R3 <<>> aaaa smtp.gmail.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23570
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 13, ADDITIONAL: 0

;; QUESTION SECTION:
;smtp.gmail.com.                        IN      AAAA

;; ANSWER SECTION:
smtp.gmail.com.         114     IN      CNAME   gmail-smtp-msa.l.google.com.
gmail-smtp-msa.l.google.com. 115 IN     AAAA    2001:4860:8005::6d

;; AUTHORITY SECTION:
com.                    104845  IN      NS      l.gtld-servers.net.
com.                    104845  IN      NS      a.gtld-servers.net.
com.                    104845  IN      NS      j.gtld-servers.net.
com.                    104845  IN      NS      d.gtld-servers.net.
com.                    104845  IN      NS      g.gtld-servers.net.
com.                    104845  IN      NS      b.gtld-servers.net.
com.                    104845  IN      NS      c.gtld-servers.net.
com.                    104845  IN      NS      f.gtld-servers.net.
com.                    104845  IN      NS      m.gtld-servers.net.
com.                    104845  IN      NS      k.gtld-servers.net.
com.                    104845  IN      NS      h.gtld-servers.net.
com.                    104845  IN      NS      e.gtld-servers.net.
com.                    104845  IN      NS      i.gtld-servers.net.

;; Query time: 0 msec
;; SERVER: ::1#53(::1)
;; WHEN: Sun Jul 10 08:32:14 2011
;; MSG SIZE  rcvd: 322

chateau.d.if!abbe:~ % telnet smtp.gmail.com smtp
Trying 2001:4860:8005::6d...
Connected to gmail-smtp-msa.l.google.com.
Escape character is '^]'.
220 mx.google.com ESMTP e13sm7839160wfd.1
EHLO lostca.se
250-mx.google.com at your service, [2001:470:f803:8000::1]
250-SIZE 35882577
250-8BITMIME
250-STARTTLS
250-ENHANCEDSTATUSCODES
250 PIPELINING
QUIT
221 2.0.0 closing connection e13sm7839160wfd.1
Connection closed by foreign host.

Super cool