You will need to create a custom content handler to be able to process a generic flat file that is sent by SMTP to the Integration Server. (XML files kick off the XML content handler, which converts your incoming XML document to a node object.)
This topic is a bit complicated, so we should probably discuss outside of this forum. My email is esu@webmethods.com. Please email me and I can send you some information on content handlers which should help.
I believe this information is also covered in our course “D220 - Advanced Business Partner Integration”.
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