TTL Settings

[danliker]

i have 2 problems with the TTL Entry in Plesk DNS-Settings.

the first problem is, why is 0 seconds not possible ?
(as i know this is used for no cache)

the second one is that a domain alias does not take the ttl of the main domain !?

 

[IgorG]

http://kb.odin.com/en/6189

 

[danliker]

ok, and what about the 0 seconds entry for ttl ?

 

[IgorG]

I have forwarded your question about 0 TTL to developers. I will update this thread with their answer as soon as I receive it.

 

[IgorG]

It is not recomended to set TTL value to zero, see http://technet.microsoft.com/en-us/library/dd197427(WS.10).aspx :
"In general, never configure the TTL to zero. The difference between a setting of 0 or 60 is minimal to the accuracy of the record, but when the TTL is set to 0, there is a significant impact on DNS server performance because the DNS server is constantly querying for the expired data."