2930616 - E-Mail Notifications for alerts cannot be sent using SMTP server using TLS

Symptom

After changing SMTP server to use TLS protocol E-Mail notifications for alerts cannot be sent out.
Also the following errors are logged to indexserver traces:

e STATS_SMTP SMTPClient.cpp(00073) : Remote endpoint closed unexpectedly: <IP address>/<port>_tcp
e STATS_SMTP SMTPClient.cpp(00266) : error sending email [SMTPMail: (sender: <sender e-mail>, recipients: <recipients e-mail>), "<alert description>" (id <alert_id>) on database <tenant SID> of <SYSTEMDB SID>
...
exception 1: no.9001001 (StatisticsServerAsSQLScript/interfaces/smtp/SMTPClient.cpp:342) TID:
SMTP protocol error, expected 250, got 451: 5.7.3 STARTTLS is required to send mail

Environment

SAP Hana Platform Edition 1.0
SAP Hana Platform Edition 2.0

Product

SAP HANA, platform edition all versions

Keywords

SMTP, e-mail, multi-factor authentication, MFA, alerts, statisticsserver, oauth, office 365 , KBA , HAN-DB-MON , SAP HANA Monitoring , Problem

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