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Old 12th May 2008
J65nko J65nko is offline
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Join Date: May 2008
Location: Budel - the Netherlands
Posts: 4,128
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Can you do a manual DNSBL lookup?

Does tcpdump show any attempts of sendmail to do a DNSBL lookup?
Code:
# tcpdump -nv -i re0 host 192.168.222.10 and port domain
This example assumes 192.168.222.10 is your DNSBL box.
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You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump
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