[Dshield] Blocking Country Access
tonni at hetnet.nl
Thu Feb 22 02:31:51 GMT 2007
Dave Hatz wrote, on 21. feb 2007 22:48:
> Can u provide a little information on "blocking at the MTA level".
MTA is Postfix 2.3. A cidr subnet block, e.g., from
/etc/postfix/maps/cidr_reject (sorry for any folding, these are discrete
# Ya.com Internet Factory Albasanz, 16 Planta 4 28037 Madrid ES
188.8.131.52/17 REJECT Client subnet access denied
184.108.40.206/15 REJECT Client subnet access denied
220.127.116.11/19 REJECT Client subnet access denied
18.104.22.168/15 REJECT Client subnet access denied
The block obviously applies to any (open) port an smtpd listener is
running on, 25, 465 or 587 in our case.
Email: tonni at hetnet dot nl
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