27 lines
1.4 KiB
HTML
27 lines
1.4 KiB
HTML
<!--# set var="title" value="Mail relaying with NetSuite" -->
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<!--# set var="date" value="March 3, 2006" -->
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<!--# include file="include/top.html" -->
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<p>When sending a reply to a valid “message.<msgid>@messages.netsuite.com” address, I discovered something interesting. <a href="http://netsuite.com/">NetSuite</a> uses these addresses to store a copy of the message with the order, then forwards the message along to the real destination. However, the forwarding method is busted.</p>
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<p>It translates the headers in the original message. I sent:</p>
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<pre><code>From: Ian Gulliver <ian@penguinhosting.net>
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To: “George Sasson (PAA)” <messages.<msgid>@messages.netsuite.com>
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Cc: ian-djmart@penguinhosting.net
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</code></pre>
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<p>It internally translated this to:</p>
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<pre><code>From: ian@penguinhosting.net
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To: george@proaudioamerica.com
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Cc: ian-djmart@penguinhosting.net
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</code></pre>
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<p>It then passed the message to its outgoing mail program, which <strong>reparsed the headers</strong>. In this case, it means that I got two copies of the message; one from my local MTA because of the CC, and one back from NetSuite because of the CC.</p>
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<p><a href="http://prolixium.com/">prox</a> helped me test this; it works when the CC isn’t coming back to the same host. That means it’s a valid relay method.</p>
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