Mails are not received in my domain and i am getting error ” Mailbox quota exceeded “

Solution :

If the domain get exceeded the allocated mailbox resources then you are unable to receive mails . You have to check and increase the mailbox quota for your domain.

1] Login to your plesk control panel.
2] Click on subscriptions.
3] Click on the domain name.
4] Click on customize
5]change the Mailbox size