despite of doing every thing as well and each config file has been checked but still this message has been appeared , please support with correct configuration
i did the below for configuration the dovecot
i uncommented the protocol line imap pop 3 in config file /etc/dovecot/dovecot.conf
uncommented mail_location line =maildir:~/Maildir in file /etc/dovecot/conf.d/10-mail.conf
Uncomment the line ‘#disable_plaintext_auth = yes’ in file /etc/dovecot/10-auth.conf
and mechanism_auth = plain login
and finally i set user and group to posfix in /etc/dovecot/10-master.conf
please guide and support for what i miss in the configuration