Dear User, Thank you for bringing this up. It was due to our greylist setting for *@zohocorp.com domain, we have now excluded the greylist for abuse addresses.

Dear User, Thank you for bringing this up. It was due to our greylist setting for *@zohocorp.com domain, we have now excluded the greylist for abuse addresses. Please resend your complaint to our abuse address. Regards, Zoho Account and Abuse Monitoring Desk.