Since a few days i don't receive any mail anymore when my backup is finished (via a cron job). When i look at the log file i notice the following errors:

• 553 Relaying disallowed as MAILER-DAEMON@smtp.zohomail.com;
• 550 5.4.6 Mail rate exceeded limit

I hope somebody can help me how to solve this issue.

Thanks in advance.

Kind regards,

Maarten