var sidebar_align = 'right';
var content_container_margin = parseInt('350px');
var sidebar_width = parseInt('330px');
Redunant Mail Servers
Have wondered how is it possible to set this up ..
Say for domain 123.com - MX records are setup as follows :
123.com MX preference = 10, mail exchanger = mail.123.com
123.com MX preference = 20, mail exchanger = mail.backup123.com
mail.123.com internet address = 220.127.116.11
mail.backup123.com internet address = 18.104.22.168
For this setup, everything a mail is being sent to [email protected] - the mail will first be delivered to mail.123.com @ 22.214.171.124
however, in event of mail.123.com being down i.e switch off - the mail will in turn be delivered to mail.backup123.com @ 126.96.36.199
I have seen this system working ... but my question is on the setup....
What are the requirements to set this up ?
Any special requirements required for the server @ 188.8.131.52 ?
Any special requirements requred for the server @ 184.108.40.206 ?
Could any one point to the some information on this ?
How does mail accepted be mail.backup123.com @ 220.127.116.11 get routed back to mail.123.com @ 18.104.22.168 so that the user eventually gets the email ?