I've successfully got my Gmail account loaded with an app specific password but iCloud account will not connect. I've generated app specific password for my iCloud ID and tried filling the username with and without the @icloud.com appended; I've tried both SSL/TLS and START/TLS; all the above in all possible variant combinations.
All I get is the same "Unable to validate: ● SMTP connection error"
I've searched the "Mail" tagged answers in this and other forums and haven't found a solution. What am I missing?