Whitelist or BAYES?

Maybe I should not ask this, but . . .

A relatively innocuous member informational email from a local town Library (monthly) gets marked as spam as shown below.
The BAYES_99 and BAYES_999 values are something I am toying with for other reasons.  Seems odd these should hit either one of those tests.

So, on the one hand I can add them to whitelist and be done with it, or I can add
them to missed HAM for re-learning.

Which is the best approach?

>>> 

X-Spam-Checker-Version: SpamAssassin 3.4.5 (2021-03-20) on elmoid
X-Spam-Flag: YES
X-Spam-Level: *********
X-Spam-Status: Yes, score=9.9 required=5.0 tests=BAYES_99,BAYES_999,
	DKIMWL_WL_MED,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,
	HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,SPF_HELO_NONE,SPF_SOFTFAIL,
	T_KAM_HTML_FONT_INVALID autolearn=disabled version=3.4.5
X-Spam-Report:
	*  4.1 BAYES_99 BODY: Bayes spam probability is 99 to 100%
	*      [score: 1.0000]
	*  5.0 BAYES_999 BODY: Bayes spam probability is 99.9 to 100%
	*      [score: 1.0000]
	*  0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record
	*  0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level
	*      mail domains are different
	*  0.7 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail)
	*  0.0 HTML_MESSAGE BODY: HTML included in message
	* -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature
	* -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from
	*      author's domain
	*  0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily
	*       valid
	*  0.0 T_KAM_HTML_FONT_INVALID Test for Invalidly Named or Formatted
	*      Colors in HTML
	* -0.0 DKIMWL_WL_MED DKIMwl.org - Medium trust sender
Received: . . .[re-dakt-ed]; Thu, 26 Sep 2024 08:05:44 -0400 (EDT)
X-Virus-Status: Clean

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