Messages from Yahoo address not getting through

I’m having issues with messages not getting through to my inbox. I’m using Contact Form 7 in conjunction with Flamingo, and while most of the messages get sent through to my email inbox, any messages being sent from Yahoo email addresses aren’t getting through. Flamingo is catching them, but they don’t actually get sent through. I’m going to post this there as well, but any help would be greatly appreciated.

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