Who Me Too'd this solution

I found a fix, from this webpage "Update Verizon.net account info in POP3 email applications":

https://help.aol.com/articles/verizon-move-to-aol-mail-updating-your-third-party-email-program-or-mo...

This page is dated April 13, 2018, and it tells me to simply change my Outlook email settings as follows:

incoming mail server to pop.verizon.net (had been incoming.verizon.net)

outgoing mail server to smtp.verizon.net (had been outgoing.verizon.net)

Did that, and everything is now back to normal.