Please help !! Incoming emails to my mail account are not being delivered.

Please help !! Incoming emails to my mail account are not being delivered.

Delivery to the following recipient failed permanently:

aaaaaa@zohohosted.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain  zohohosted.com  by  mx10.mailspamprotection.com . [184.154.208.34].

The error that the other server returned was:
550 no mailbox by that name is currently available

The Outgoing emails are going fine.

Note :   Intentionally changed the email id and domain for privacy.