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Re: mail administrator certification example

2004-07-30 10:12:19
On 30 Jul 2004 at 13:05, John Keown wrote:

What does the following mean.

smtp.example.com. A 192.167.1.25
mx.example.com. A 192.168.1.19
example.com. MX mx.example.com.
example.com. TXT "v=spf1 a:smtp.example.com/28 mx -all"

Does it mean 192.167.1.25 192.168.1.19-192.168.2.18
OR DOES IT MEAN 192.167.1.25 192.168.1.0-192.168.1.255

Neither one. It allows emails from 192.167.1.25/28 and 192.168.1.19.
The 192.167.1.25/28 part means 192.167.1.16-192.167.1.31.

Notice I am listing both the range and the mx single ip.

This is not a problem.

The answer is that it has 2 different meanings and the answer depends on who
is giving the answer.

I don't really understand how you could come to your two meanings. They 
are not right either way you see it.

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