I am getting error in the end of the task- Linux Postfix Mail Server

In the task - Linux Postfix Mail Server
While I am submitting the task, at the end I am getting below error.

  • Mail not recieved! ‘dovecot’ is not configured correctly on Mail Server
    ERROR test_postfix.py - AssertionError: - Mail not recieved! ‘dovecot’ is not…

Please help me with the task, I tried a lot with it but with no success.

Thanks for your reply. I tried it again and this time I am able to complete the quiz successfully.