BAPI_PO_CHANGE: Email Message Output Not Sent (External Send)

Question

Hello,
I'm hoping someone has seen this issue before.  In a Z-program within our ECC system, I am updating various fields via BAPI_PO_CHANGE and the changes are successfully saved and committed to the database.  When the output determination for the purchase order is "print", there are no problems - the print output occurs as expected based on the appropriate settings.  However, when I change a PO in the exact same way, but the output determination for the PO is "external send" (i.e. email) with the same fields etc... the messages are updated as having been generated, but the email is never sent from the system.  NAST shows the record of it as processed successfully as well.
Does anyone have any idea why this might be occurring?
Any help will be appreciated.
Thanks in advance,
Leslie

Answer 1

Execute SCOT Transaction.
FIrst
From the Menu, View -> Node
Expand the "SMTP" -> "INT" ->
By default BASIS would have set it to your own company domain.
The domain of the email address for example john.doe - at - yahoo - dot - com which is yahoo - dot - com should be listed in there.
If it is not, then you have to work with your Basis team to set it up.
Alternatively,
From the Menu, View -> Routing
You will see the list of domains it is restricted for.
Second,
Most emails coming from SAP get routed to your main email SMTP Server which is hosted using Microsoft Exchange.
The emails from SAP get forwarded to this SMTP server for distribution.
Check whether there is any filter or restriction setup for any emails coming from SAP.
You may have to contact your Exchange Admins for this.
Work with your Basis team to do it.
Finally,
Execute program RSCONN03 to do a routing test.
Hope this helps.