Hi, Thanks for the wonderful service! 

However, thing has been working well until recently

I’m currently unable to receive any emails. This is really bad for my business. 

Yesterday I wrote  an email to my web-host asking them to fix the problem, since i thought they were the one blocking my emails. 

They checked everything and  replied to me with the following message…(Below)

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 We could see that the mails are being deliver to a remote server.  However, the messages are  rejected by Zoho (The mail server you are currently using).  While checking the error code  552 5.1.1 with Zoho, if  is given if the email is classified as spam. Your form mail might be classified as spam false positively. Can you please contact and ask them to whitelist mails from our server. the from address of your form-mails will be root[at]linux2-whg.secure-wi[dot]com.

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I also tried  whitelisting the address but it didn't work

Could someone please  help  me solve this problem ?

Thanks in advance.