Cannot send email following MacOS Mojave 10.14.5 upgrade
since upgrading to the Mojave 10.14.5 I cannot send emails using the mail app. This is not a network issue as if I sign into the web based iCloud from my MacBook Pro (2017) then the emails will send. It applied to my apple account and some other yahoo email accounts that previously worked fine with the app.
Any ideas how this can be rectified?
MacBook Pro 13", macOS 10.14