INVALID_ADDRESS, ERROR_CODE :554, ERROR_CODE :5.7.1 <sender-of-o51.zoho.com[135.84.80.216]>: Client host rejected: Access denied
Help please
The problem is we can not to send email to some addresses, because we receive the message:
INVALID_ADDRESS, ERROR_CODE :554, ERROR_CODE :5.7.1 <sender-of-o51.zoho.com[135.84.80.216]>: Client host rejected: Access denied
Thanks.
Claudio