3596242 - E-mail configured in HANA Cockpit, but the alerts are not received - error is 'unable to relay recipient in non-accepted domain' 

Even after configuring the e-mails' setting for the alerts in the HANA Cockpit, these still are not received. In the indexserver log, the following problem/error can be seen:

SMTP protocol error, expected 250, got 550: XXX SMTP; Unable to relay recipient in non-accepted domain

 e STATS_SMTP       SMTPClient.cpp(00265) : error sending email [SMTPMail: (sender: XXX, recipients: XXX), "Test Subject", Test Email Body, exception  1: no.9001001  (StatisticsServerAsSQLScript/interfaces/smtp/SMTPClient.cpp:358) TID: 10191
    SMTP protocol error, expected 250, got 550: XXX SMTP; Unable to relay recipient in non-accepted domain 

SAP HANA, platform edition

SMTP, expected 250, Unable to relay recipient in non-accepted domain, error sending email , KBA , HAN-DB-MON , SAP HANA Monitoring , Problem