Mail delivery failed: returning message to sender if i send any email from particular contact

[ChetanR]

I have receive bounce back if i send any email from particular contact@pharmaglobiz.com 

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

  ratnawat.ratnawat@gmail.com

    host sg2nlshrout-v02.shr.prod.sin2.secureserver.net [182.50.132.241]

    SMTP error from remote mail server after end of data:

    552 5.2.0 k0uMiotHWwZEWk0uMi75b9 :CPANEL: Access to this mail system has been blocked for ?? due to spam activity. Spam was seen coming from this account, and possibly other scripts running in it. For help resolving the issue, see http://x.co/spamclean. Once the compromise has been cleaned, please contact customer support to remove the block.

i have already follow all instructions which  is assist by support team but result is zero 

i also filled a complain on https://checkspam.godaddy.com/ but there is no answer...

Please Help.....

[PL281]

@ChetanR 

I am an end user like you and going through some unanswered posts. I wanted to see if your email sending had been restored. If it has not been restored yet, I suggest calling into GoDaddy support as they will be able to look into more details on the account, especially since you filled out the report as well.