1496168 - Relay problem while sending mails through SAPconnect using SMTP plug-in

The issue occurs when attempting to send emails from the SAP system to an external mail address using the SMTP node. In transaction SOST, the following error status codes are observed for some send requests:

• XS802
• XS812
• XS806
• XS829
• XS855

The error message can be checked in more detail in transaction SOST on the long text message (2757752) of the email which failed.

The following information might be displayed under "Information from external system":

• Relaying denied
• Unable to relay
• Relay access denied
• Relay rejected for policy reasons
• Rejected for policy reasons
• Sorry, that domain isn't in my list of allowed
• Invalid domain name
• Unable to relay recipient in non-accepted domain
• There is a partner connector configured that matched the message

• All SAP versions as of basis release 6.10
• SMTP plug-in
• SAPconnect

CL_SMTP_RESPONSE ESMTP error code is not known, XS 802, XS 829, 550, 553, 554, 5.7.1, SCOT, No delivery, as recipient unknown, rejecting, security reason, domain, 5.2.2 mailbox full, 501, 5.4.4, Invalid domain name, 5.7.54, Unable to relay recipient in non-accepted domain, 5.7.64 Relay Access Denied, ATTR36, 5.7.51, TenantInboundAttribution https://me.sap.com/notes/2757752 , KBA , recipient address unknown , office365 , xs813 , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , Problem