How To Fix /SMB/TRANSP_INFRA639 - Error: Email cannot be sent

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/TRANSP_INFRA -

• Message number: 639

• Message text: Error: Email cannot be sent

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/TRANSP_INFRA639 - Error: Email cannot be sent ?

  The SAP error message /SMB/TRANSP_INFRA639 indicating that "Email cannot be sent" typically arises in the context of the SAP Business One system, particularly when there are issues related to the email configuration or the underlying infrastructure that supports email sending.
  Causes:
  
  Email Configuration Issues: The SMTP server settings may not be correctly configured in SAP Business One. This includes incorrect server address, port number, or authentication details.
  Network Issues: There may be network connectivity problems preventing the SAP system from reaching the SMTP server.
  Firewall Restrictions: A firewall may be blocking the outgoing email traffic from the SAP system to the SMTP server.
  SMTP Server Issues: The SMTP server itself may be down or experiencing issues.
  User Permissions: The user account configured for sending emails may not have the necessary permissions or may be locked.
  Email Format Issues: The email content or format may not comply with the SMTP server's requirements.
  
  Solutions:
  
  
  Check SMTP Configuration:
  
  Go to the SAP Business One application and navigate to the email settings.
  Verify the SMTP server address, port, and authentication details (username and password).
  Ensure that the "Use SSL" or "Use TLS" options are set correctly based on your SMTP server's requirements.
  
  
  
  Test Network Connectivity:
  
  Use tools like ping or telnet to check if the SMTP server is reachable from the SAP server.
  Ensure that there are no network issues that could be causing the problem.
  
  
  
  Review Firewall Settings:
  
  Check the firewall settings on both the SAP server and the network to ensure that outgoing connections to the SMTP server are allowed.
  
  
  
  Check SMTP Server Status:
  
  Verify that the SMTP server is operational and not experiencing downtime or issues.
  If possible, check the SMTP server logs for any errors related to the connection attempts from the SAP system.
  
  
  
  Review User Permissions:
  
  Ensure that the email account being used has the necessary permissions to send emails.
  Check if the account is locked or disabled.
  
  
  
  Validate Email Content:
  
  Ensure that the email content (subject, body, attachments) is formatted correctly and does not contain any invalid characters or excessive size.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to email sending in SAP Business One.
  Logs: Review the application logs for more detailed error messages that can provide additional context on the failure.
  Documentation: Refer to the SAP Business One documentation for detailed instructions on configuring email settings and troubleshooting email issues.
  
  If the problem persists after checking these areas, it may be beneficial to consult with your IT department or SAP support for further assistance.