I've noticed SEM-URI checks returning false-positives too.

Example spam information from email header:

X-SmarterMail-Spam: SPF [PermError]: 5, Cyren [Unknown]: 0, Message Sniffer [code:0]: 0, DKIM [None]: 5, SEM-URI [count:2]: 10

The domain doesn't appear on any of the SEM lists either.

Here's the same header information from an email sent by ST (support@smartertools.com).

X-SmarterMail-Spam: SPF [Pass]: 0, Cyren [Unknown]: 0, Message Sniffer [code:0]: 0, DKIM [Pass]: 0, SEM-URI [count:2]: 10

They're also not listed (https://spameatingmonkey.com/lookup/smartertools.com).

Thanks for this Steve!

I've had a confirmation email, I've checked it and it's not listed now so we should be good from here on in.

Thanks Steve and Alex for your kind help!

@Steve: how is this related to www.w3.org? Can you please elaborate?

And how is this resolved? We`ve seen SEM-URIRED throw false positives a few days ago and disabled it, but now SEM-FRESH and SEM-FRESH10/15/30 have been labeling all incoming mail as SPAM all day long today.

@Ionel Aurelian Rau

I looked for all http references in the body of the email including raw HTML and looked up the domain and the FQDN via https://spameatingmonkey.com/lookup

www.w3.org was on the lists as described by the OP and I used the removal process under the list status to have it delisted.

Ah, OK, so the www.w3.org link in mail bodies was failing spameatingmonkey`s checks?

Well, since yesterday we`ve had hundreds of emails from very different people, from a wide variety of domains and all are failing spameatingmonkey. No way we`re going to comb through all of these emails in RAW view and check all referenced URLS on spameatingmonkey to find the culprit..

@Ionel Aurelian Rau

Look in your DNS cache under net.spameatingmonkey.fresh. and you'll see the culprits cached there.