Not able to receive mails from other domains.

Not able to receive mails from other domains.

My domain is VioletStreet.com and I am unable to receive mails since 7 days.
This is the error by gmail:

This is an automatically generated Delivery Status Notification

THIS IS A WARNING MESSAGE ONLY.

YOU DO NOT NEED TO RESEND YOUR MESSAGE.

Delivery to the following recipient has been delayed:

     hello@violetstreet.com

Message will be retried for 2 more day(s)

Technical details of temporary failure:
The recipient server did not accept our requests to connect. Learn more athttp://support.google.com/mail/bin/answer.py?answer=7720
[(0) violetstreet.com. [54.255.192.248]:25: Connection timed out]'

MXToolbox showing the correct information. What could be the issue here?