power off then on dns server new propagation?

[optimised]

Hi,
I just got my dns/web server up after finding out my isp was having a problem with there cache server. The server was working fine earlier hosting three domains. I powered down the box about 2 hours ago for a hardware upgrade.
Now when I fire off everything dns only serves up one of the domains, the other two are not working? Is there a propagation period after shutdown/restart.
I'm wondering if I need to call isp again with there cache server problem..(what they told me)

 

[ifincham]

Hi,



What is supposed to happen is that the 'serial','refresh', etc. parameters in the zone file control cacheing :



@ IN SOA xxxxxx.com. root.xxxxxx.com (

5 ; serial

28800 ; refresh

7200 ; retry

604800 ; expire

86400 ; default ttl

)



When a cacheing nameserver gets an entry it should adhere to the time limits as shown above. So, for example, when the refresh value is reached (8 hours or 28800 seconds in above example) it should attempt to re-check that entry. The most common error is not increasing the serial number field - that is used to determine if there's anything changed and therefore influences whether changes you make are also updated in other dns' cache.



So, it you are testing from outside, you could expect up to whatever your 'refresh' value is to elapse before other dns servers catch up.


Rgds