How do I use CSS and what is its return code? (127.0.0.3)
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How do I use CSS and what is its return code? (127.0.0.3)
The Spamhaus CSS is used in the same way as the SBL or Zen zones.
- One zone or the other must be used (but not both!) in order to use CSS; CSS is not a separate zone.
- CSS is included in Zen, so if the SBL or Zen are already in use, CSS is also.
- The return code for CSS in either “sbl.spamhaus.org” or “zen.spamhaus.org” zone is 127.0.0.3.
For more about Spamhaus DNSBL usage, and all our return codes, see the DNSBL Usage FAQ.
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