Forgot Password Email Shows

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I hope this is an easy fix... I was noticing that I was not receiving emails from my site's 'forgot password' page (using default php mail) on my normal email address. Other email addresses I use for testing and such did receive it. But I want to make sure most everyone receives the emails when they request them. So I looked at the logs of the site and noticed there was funny characters in the from field...
From: =?UTF-8?Q?Forgot=20Password?=

In my concrete.php file the name is set to 'Forgot Password'. If I remove the name and just have the email address in there I get the same weird characters with the email address sandwiched in the middle.

Just recently updated to 8.4.3 (php7.1.27)

Any ideas?

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