You are seing it yourself. Their e-mails fail SPF allignment, SPF 
authentication and DKIM authentication. As a consequence, they fail DMARC.

I see a deluge of DMARC failures, mostly from forwarding accounts, mailing 
lists, and the mass mailer musvc.com

I do not have the resources to contact them for cyber 
spaking/slap/disciplining. Their e-mails are going where they belong. If they 
do not care about the quality of what they send out, why should I care about 
their negligence?

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