ERROR_CODE :550, ERROR_CODE :5.7.1 [CS01]

ERROR_CODE :550, ERROR_CODE :5.7.1 [CS01]

@icloud.com, ERROR_CODE :550, ERROR_CODE :5.7.1 [CS01] Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137

Reporting-MTA: dns; mx.zohomail.eu
Arrival-Date: Sun, 23 Feb 2020 09:21:15 -0500

Diagnostic-Code: @icloud.com, ERROR_CODE :550, ERROR_CODE :5.7.1 [CS01] Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137

I'm getting this report when try to send mail