AirLive ES-4000 v2 - Manual (Page 65)

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According to aforementioned, web.airlive.com is used to map host name and its IP address. And
www.airlive.com, a CNAME of web.airlive.com, offers inquiry ability and redirection to web.airlive.com.
As seen from Tab. 4-6, it can be inferred that when browsing www.airlive.com visitors enter different server
according to the browsing sequence.
1st visitor enter server 61.11.11.11
2nd visitor enter server 211.22.22.22
3rd visitor enter server 61.11.11.11
4th visitor enter server 211.22.22.22
5th visitor enter server 61.11.11.11
6th visitor enter server 211.22.22.22
.
.
(User are distributed to servers alternatively)
As seen from Table 5-7, the smaller figure it is, the higher priority it gets. For example, the user A wants to
email to [email protected], a mail server (mail.airlive.com) served as a SMTP server decides where and
how to send the mail by inquiring the target DNS server.
The MX record of the inquiry of mail.airlive.com is as followed: (Table 5-7)
Domain Name Type Address Reverse Priority
mail.airlive.com MX smtp1.airlive.com X 1
mail.airlive.com MX smtp2.airlive.com X 2
Table 5-7 MX record of mail.airlive.com
For figure 1 has the highest priority, server will try to deliver the mail to smtp1.airlive.com due to its first priority.
If delivery failed, then the mail goes to smtp2.airlive.com the secondary priority.