Re: Web server and email server in different places with same domain name


"Tim" <tefnz@xxxxxxxxxxxx> wrote in message
news:pan.2005.12.16.00.17.16.163170@xxxxxxxxxxxxxxx

> And that serial number order is BAD. If the date is being used as part of
> the serial, it should be in the form YYYYMMDDxx (for example 2005121500),
> rather than MMDDYYYY or DDMMYYY. This is because slave name servers check
> that the master serial number is larger, and that can be guaranteed only
> if the date is stored as year then month then day. Use of date in month
> or day-first order can lead to strange failures, because of the way that
> serial number comparisons are done. (serial numbers are manipulated as an
> unsigned 32-bit integer, but the range wraps, so that a serial number of
> 2**32 -1 (= 4294967295) is less than 0). Because of these issues, a
> simple sequential serial number, starting at 1, is often easier to use
> than a date-based serial.

Don't sweat it. If you make a bad mistake, you can wait for the timeouts of
the domain and the slaves will pull the new one, even without a newer serial
number. It's also possible to publush a serial number that forces pulls, I
believe "-1". Look in the manuals with your installation of BIND or whatever
DNS server you use.


.

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