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The simplest way to check against the SPEWS list is to query using an IP address either
out of an email header or one that corresponds to a webpage URL domain or DNS server domain.
Put the "dotted quad" (aaa.bbb.ccc.ddd) into the "Lookup Record or IP #" box at the top of
this page, click on the [Test] button and a check against the SPEWS list will be performed.
The results can be; "This was NOT found in SPEWS", which means SPEWS has not seen
spam or spam services coming from this area of the internet. It does not mean there may
not be a spammer there, just that it has not been SPEWS listed. You may also wish to
try the IP address at the Spamcop
or MAPS websites.
There are utilities provided at Osirusoft,
ORBZ and at
OpenRBL that will allow you to test against muliple blocklists at once.
The other result of the lookup can be; "This IP address was found in SPEWS", which means
SPEWS has seen spam or spam services in this area of the internet. The entries in the list
come from the knowledge and experience of the people who set up and use the SPEWS lists
for their own filtering & blocking purposes.
What you do with the result of a lookup is up to you, what you are seeing is just a
recommendation by SPEWS that, to help prevent spam, you may wish to filter or block IP address
ranges that come up positive in the test. People trying to email from these IP addresses
to systems using SPEWS will normally see a "bounce message" with a link to our
"Why was I referred to this website?" page.
Another use people put the SPEWS check to is verifying that a host or network they plan to
set up on is not spamming or supporting spammers in any way. Not being listed in SPEWS is
not a guarantee of any kind to this, but being listed is not a good sign.
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