GMAIL绑定自己的域名MX解析出现错误

问了一个同事才知道，MX的优先级别不能设成一样的（默认是10）

* Priority *

* Mail Server *
 1
* This is the top priority mail server. Do not assign this priority to any
other servers. Learn
more<https://www.google.com/support/hosted/bin/answer.py?answer=34181>
. ASPMX.L.GOOGLE.COM.  5 ALT1.ASPMX.L.GOOGLE.COM.

5 ALT2.ASPMX.L.GOOGLE.COM.

10 ASPMX2.GOOGLEMAIL.COM.

10 ASPMX3.GOOGLEMAIL.COM.

10 ASPMX4.GOOGLEMAIL.COM.

10 ASPMX5.GOOGLEMAIL.COM.