Re: Odd A record in our hosts zone file

On 25.06.21 18:29, Bruce Johnson wrote: Thank you…this is very useful information; I thought TTL could only be specified on a per-zone basis, not per-host. not even per-host. Different RR types for the same host can have different TTL. mail1m IN A xxx.xxx.xxx.52;

Re: Odd A record in our hosts zone file

Thank you…this is very useful information; I thought TTL could only be specified on a per-zone basis, not per-host. On Jun 25, 2021, at 11:10 AM, Richard T.A. Neal mailto:rich...@richardneal.com>> wrote: Hi Bruce, Here you're specifying a distinct TTL for those records which overrides the def

Re: Odd A record in our hosts zone file

Time to live in the cache. Short time to live is useful when you need to change the A record to swing one host to another. > On Jun 25, 2021, at 12:56, Bruce Johnson wrote: > > I ran across these A records in one of our zone files: > > ;EXCHANGE STUFF > mail1m IN A

RE: Odd A record in our hosts zone file

Hi Bruce, Here you're specifying a distinct TTL for those records which overrides the default TTL for this zone (which you will have set towards the top of the file with the rest of the defaults) 1m = 60 seconds: https://web.mit.edu/rhel-doc/5/RHEL-5-manual/Deployment_Guide-en-US/s1-bind-zone.h