Fwd:The Truth

[Andrew Mathews]

Roger Oberholtzer wrote:
> Has anyone been using the services of e-mail blacklists? I have been
> tempted. How hard to set up in sendmail?
> 
<snip>

It's quite easy, simply add the following to your /etc/mail/sendmail.mc:
FEATURE(`dnsbl',`dnsbl.njabl.org',`Message from $&{client_addr} rejected 
- see http
://njabl.org/')
FEATURE(`enhdnsbl',`bl.spamcop.net',`"Spam blocked see: 
http://spamcop.net/bl.shtml
?"$&{client_addr}',`t')

Then rebuild your sendmail configuration with
m4 /etc/mail/sendmail.mc > /etc/sendmail.cf
and restart sendmail.
-- 
Andrew Mathews
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