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Good
Morning Everyone,
I recently
have started using the SMTPRCV to block at the door again, as certain pesky
spammers are consistent and I am getting tired of going through all
the spam that goes to trash.
I have
tried to use the entire CIDR table with SMTPRCV, but now I am discovering
that many of the ones where I block with a /20 ,
/21 , /22 are not being blocked at
all. If I individually
list them with a /23 or /24 that works, but it does not seem to be using the
entire CIDR table.
Has anyone else used it this way, and
experienced that ?
CIDR # Classfull Networks
SMTPrcv
OK:
/ 1 128 A's
/ 2 64 A's =
/ 3 32 A's =
/ 4 16 A's =
/ 5 8 A's =
/ 6 4 A's =
/ 7 2 A's =
Yes
/ 8 1 A's =256 B's
Yes
/ 9 128 B's =
/ 10 64 B's =
/ 11 32 B's =
/ 12 16 B's =
/ 13 8 B's =
/ 14 4 B's =
/ 15 2 B's = Yes
/ 16 1 B's =256 C's
Yes
/ 17 128 C's =
/ 18 64 C's =
/ 19 32 C's =
/ 20 16 C's =
/ 21 8 C's =
/ 22 4 C's =
/ 23 2 C's =
Yes
/ 24 1 C's =256 IP's Yes
/ 25 128 -IP's=1/2 C
/ 26 64 -IP's=1/4 C
/ 27 32 -IP's=1/8 C
/ 28 16 -IP's=1/16 C
/ 29 8 -IP's=1/32 C
/ 30 4 -IP's=1/64 C
/ 31 2 -IP's=1/128 C
/ 32 1 -IP's=1/256 C
Yes
Thanks for
any light you can shed upon this !
Sincerely,
John Martoccio
Intelligent Solutions (a computer VAR) Fox Lake, IL, USA [EMAIL PROTECTED] |
Title: Message
