This bitmap image was downsampled from an Inkscape vectorial image, causing some loss of quality. Try asking the author for the SVG source.
Rendered with Inkscape: The direction of the DSN is correct, its description is visible.
Licensing
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
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{{Information |Description={{en|1=RFC 3464 diagram of MTAs involved in the creation of a Delivery Status Notification.}} |Source={{own}} |Author=Ale2006-from-en |Date=2009-11-17 |Permission= |other_versions=[[:File:Bounce-DSN-MTA-