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Re: mail administrator certification example

2004-07-30 10:19:29
On Fri, 30 Jul 2004 13:05:50 -0400, 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 is right.

192.168.1.25/28 will give you a range from 192.168.1.16 to 192.168.1.31.  It's
the same as saying 192.168.1.16/28.