Zoho is blacklisted

Zoho is blacklisted

Hi there,

Today I could not sent email from my @badgecraft.eu email account (attached to ZOHO email services) to specific client. The mail return message was saying the following: 

"ERROR_CODE :550, ERROR_CODE :Cyberoam Anti Spam has blocked this email because the sender IP Address is blacklisted."

I cannot figure out the reason. How can I solve it?

Nerijus