To what? The Yahoo address is the only address the scout troop has?Copy that to Reply-To: and write a mangled From: that looks troopy but passes DMARC. Just like MLMs do.
Lists at MLMs have names that the subscribers will recognize, but the scout troop only has the Yahoo address.
There are certainly kludges that one can apply to circumvent DMARC rejections, but this is a clear failure, an existing legitimate mail use that DMARC breaks.
R's, John
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