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corezz
join:2009-03-28
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2010-Jul-11 2:26 am

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Re: Do CNAME entries take 24-48hrs to take affect? Why?

So the CNAME record with a TTL of 1 hour means everyone on the internet will be able to access the revised entry in about an hour?
· actions · 2010-Jul-11 2:26 am ·
corezz

corezz

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2010-Jul-11 2:35 am

Another question...

What if no CNAME record exists but your other entries show a ttl of "1 day"....what happens if you now add a CNAME record...do the other servers eventually come back after 1 day and see that a new record was added (the CNAME) and then monitor this record's TTL too (along with the other entires)?
· actions · 2010-Jul-11 2:35 am ·
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2010-Jul-11 2:49 am

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said by corezz:

So the CNAME record with a TTL of 1 hour means everyone on the internet will be able to access the revised entry in about an hour?
Depends on when the DNS server makes this record available, but, yes, it could be less than an hour.
· actions · 2010-Jul-11 2:49 am ·
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2010-Jul-11 2:50 am

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said by corezz:

What if no CNAME record exists but your other entries show a ttl of "1 day"....what happens if you now add a CNAME record...do the other servers eventually come back after 1 day and see that a new record was added (the CNAME) and then monitor this record's TTL too (along with the other entires)?
Depends. If a query for this record was never made, and you create the record and then a query is made, the new record will be returned immediately. If a query is made for this record and the record does not yet exist, the TTL of the nonexistent resource record (NX RR) will dictate when the query is reattempted.
· actions · 2010-Jul-11 2:50 am ·
Forums → Broadband and Networking → Networking
« Please help me with my new modem and its/my security • [Servers] Is a DMZ Necessary? (small network - endian, exchange, »
This is a sub-selection from Do CNAME entries take 24-48hrs to take affect? Why?