When i am trying to send a mail from SAP to external mail id (say gmail id) i am getting the following error message
No delivery to firstname.lastname@example.org, as recipient unknown
Message no. XS802
The message from the node could not be delivered to recipient as the recipient is unknown.
Processing was ended normally.
Additional information of the node used (in the system language of the node):
550 5.7.1 Unable to relay for
Check the recipient address, correct if necessary and send the message to the correct address.
If the node is an SAP system, the address is not contained in address management or SAPoffice exception management. In this case, you should maintain the address here.
If the node is not an SAP system, you must maintain the address in the appropriate system.
Please help me solve this problem