website asks for login or just errors
http://www.spamhauswhitelist.com/en/
looks like a parked domain with ads
+ http://stopspam.org/rblcheck/index.php
+ aka dul.pacifier.net
+ http://www.stopspam.org/rbl-info/
+ stopped in 2013
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https://antispam.imp.ch/
no usage policy
self-service
return codes are documented
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- http://stopspam.org/rblcheck/index.php
- different kinds of lists
- none usable for me
http://www.dnsblchile.org/
chilenian spam
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