In this KBA, as an example the target mail server is the Office 365, however it's not limited to it.
The outbound mails are showing "XS812 - No delivery to (recipient address)" error messages in transaction SOST.
When you open the long text (2757752) of the XS812 message, it brings similar error as below:
"554 5.2.252 SendAsDenied (sender address) not allowed to send as (sender address) "
- SAP NetWeaver Release independent
- SMTP interface
- Office365 mail server
xs812, O365, SMTP, SOST , KBA , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , Problem
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