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Old 02-06-2008
ynilesh's Avatar
ynilesh ynilesh is offline
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What is DNS flip?
Could anybody please help me to understand,
1. what is DNS flip?
2. what happens when MX record does not exist for domain ? Who takes initiative and returns error to mailer ?
3. and how mailertable works in sendmail?

Sorry if i have put too many questions in single thread.
Last edited by ynilesh; 02-06-2008 at 07:46 AM..
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Old 02-06-2008
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sysgate sysgate is offline Forum Advisor  
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Quote:
1. what is DNS flip?
- That's something like "fail-over", also, as far as I know, it's a commercial tool maintainted by a hosting company, which actually does something like a "cache refresh of DNS records".
Quote:
2. what happens when MX record does not exist for domain ? Who takes initiative and returns error to mailer ?
The MXLOOKUP call will fail, and bounce-back will be returned to the sender.
3. For mailertable see here.
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