The Outgoing server (SMTP) %S does not allow plaintext passwords. Please try changing the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)' to 'Encrypted password'.
The Outgoing server (SMTP) %S does not allow plaintext passwords. Please try changing the ‘Authentication method’ in ‘Account Settings | Outgoing server (SMTP)’ to ‘Encrypted password’.