Thanks Scott. I never really understood how to use that until I saw your
example.

Todd Holt
Xidix Technologies, Inc
Las Vegas, NV USA
702.319.4349
www.xidix.com
 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of R. Scott Perry
Sent: Monday, March 15, 2004 7:16 AM
To: [EMAIL PROTECTED]
Subject: Re: [IMail Forum] Blocking a large IP range


>I want to block this IP range in the SMTP access control
>66.117.0.0 - 66.117.31.255
>
>Can someone tell me the proper subnet mask to use ?

Per http://www.dnsstuff.com/tools/cidr.ch?ip=66.117.0.0 , that
corresponds 
to a CIDR range of 66.117.0.0/19.

Per http://www.dnsstuff.com/tools/cidr.ch?ip=66.117.0.0%2F19 , you want
to 
use a subnet mask of 255.255.224.0.


                                                    -Scott
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