I noticed this today:
$ dig _submission._tcp.gmail.com srv
…
;; ANSWER SECTION:
_submission._tcp.gmail.com. 86400 IN SRV 5 0 587 smtp.gmail.com.
…
$ dig smtp.gmail.com a
…
;; ANSWER SECTION:
smtp.gmail.com. 242 IN CNAME gmail-smtp-msa.l.google.com.
gmail-smtp-msa.l.google.com. 242 IN A 74.125.136.109
gmail-smtp-msa.l.google.com. 242 IN A 74.125.136.108
…
</semirelevant>
Arnt
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