Foxtrot (v17.8) is suddenly having difficulty connecting to the email account (the error is "Failed to connect to the Email Account"). There have been no changes to the email account. This particular action has run without fail for years, so this isn't a set up issue- it truly just stopped working yesterday morning.  I've done all the usual checks, including updating the email password. 

When I check the settings in Foxtrot they appear correct. When I test the settings I find that it can send correctly, but the "receive" test fails.

Any thoughts/suggestions are appreciated.