>But this method of subnetting up from a class in the previous octet to
>combine several consecutive ranges is new to me and as IMAIL will not let me
>enter the ranges as I was given them I need to find out how they are
>represented in dotted notation.
Ah, gotcha.
> 212.1.128.0/19 (255.255.224.0)
You should be able to just enter this as the IP "212.1.128.0" and such
"255.255.224.0" as the submask. You can ignore the /19, IMail will figure
that out from the subnet mask.
>212.157.128.0/18 (255.255.192.0)
And for this, you would use 212.157.128.0 as the IP, and 255.255.192.0 as
the subnet mask.
>212.159.128.0/17 (255.255.128.0)
... and 212.159.128.0 with 255.255.128.0 as the subnet mask.
So if you just take off the "/xx" you should be fine. IMail can figure it
out by counting the number of binary 1's in the subnet mask.
-Scott
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