Adding a Spam Blacklist filter to your Sendmail config

Add the following line to you sendmail.mc file use SpamCop’s email blacklist filter on your sendmail email server:


FEATURE(`dnsbl', `bl.spamcop.net', `"Spam blocked see: http://spamcop.net/bl.shtml?"$&{client_addr}')dnl

Regenerate your sendmail config with:

m4 sendmail.mc > sendmail.cf

then restart your sendmail server with

. /etc/init.d/sendmail restart

To block individual domains:

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