因為唔駛錢:

http://www.google.com/a/help/intl/en/admins/editions_spe.html

點知間公司係唔係用 google mail 黎收 email? 係 linux 度用 dig 或者 host, e.g.,

[root@www#] host abc.com
abc.com mail is handled by 5 alt2.aspmx.l.google.com.
abc.com mail is handled by 10 aspmx2.googlemail.com.
abc.com mail is handled by 10 aspmx3.googlemail.com.
abc.com mail is handled by 10 aspmx4.googlemail.com.
abc.com mail is handled by 10 aspmx5.googlemail.com.
abc.com mail is handled by 1 aspmx.l.google.com.
abc.com mail is handled by 5 alt1.aspmx.l.google.com.

(以上 abc.com 為假設 domain)

就會見到d email 係由 google 黎 handle。

不過若果有日 google mail 好似 yahoo 咁, 就真係唉。