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From Betamountain.org

Make A Filter

TL\DR: Consider making a mail rule\filter in your email client of choice that allows email sent to [email protected] to be allowlisted for safe passage.

Background: This morning I was looking at why Google classified one of the listserv emails as SPAM and then I noticed that Thunderbird flagged it as well from an alt email address. I looked at the headers (sort the table below, the > 0 results are not good).

The domain host is currently:

  1. allowing ?all on the SPF setting and this raises issues with spam searching engines. Ideally this should be set to ~all and then to configure the DMARC record to require both DKIM and SPF "pass" results.
  2. not setting a DMARC record for the lists. subdomain. The default should trickle up to the root domain, however this gets a flag. Ideally, each subdomain gets a DMARC record set up.
  3. not aligning the headers (I see this a lot at work with Microsoft backends and there is an additional configuration step on their end to do)



In a nutshell, there are some items that are not in our control that cause red flags to spam filters. Setting a filter or allowlisting can help the email get to your inbox.

Score Rule Name Description
0.00 URIBL_BLOCKED ADMINISTRATOR NOTICE The query to URIBL was blocked. See dnsbl-block for more information. [URIs: l****-*****.com]
0.00 URIBL_DBL_BLOCKED_OPENDNS ADMINISTRATOR NOTICE The query to dbl.spamhaus.org was blocked due to usage of an open resolver. See for more [URIs: psu.edu]
0.00 RCVD_IN_ZEN_BLOCKED_OPENDNS RBL: ADMINISTRATOR NOTICE The query to zen.spamhaus.org was blocked due to usage of an open resolver. See for more [128.118.141.59 listed in zen.spamhaus.org]
0.50 JMQ_SPF_NEUTRAL ASKDNS SPF set to ?all [lists.psu.edu TXT:v=spf1 include:spf.protection.outlook.com ip4:128.118.0.0/16 ip4:146.186.0.0/16 ?all]
0.00 URIBL_ZEN_BLOCKED_OPENDNS ADMINISTRATOR NOTICE The query to zen.spamhaus.org was blocked due to usage of an open resolver. See for more [URIs: psu.edu]
0.00 FREEMAIL_FROM Sender email is commonly abused enduser mail provider [r*****[at]gmail.com]
0.00 DKIM_ADSP_CUSTOM_MED No valid author signature, adsp_override is CUSTOM_MED
1.50 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different
0.00 SPF_HELO_NONE SPF HELO does not publish an SPF Record
1.50 HTML_MESSAGE BODY HTML included in message
-0.10 DKIM_VALID Message has at least one valid DKIM or DK signature
0.10 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid
-0.10 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain
0.20 FREEMAIL_FORGED_FROMDOMAIN 2nd level domains in From and EnvelopeFrom freemail headers are different
0.00 T_SCC_BODY_TEXT_LINE No description available.
0.20 KAM_DMARC_NONE DKIM has Failed or SPF has failed on the message and the domain has no DMARC policy
0.20 KAM_LOTSOFHASH Emails with lots of hash-like gibberish
4.00 Total Score Scale: 0 to 10