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error email attachment VB2010

Posted on 2014-03-20
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Last Modified: 2016-05-19
I have been trying to solve a very perplexing problem I am experiencing with Visual Studio 2010 Net 4.5 using VB.NET code.

I am simply trying to send an email with an attachment to a single recipient.  The attachment must end with .sbd  as I am using it with the Iridium Satellite Network. This is no problem.  The .NET application is an assortment of .aspx files.  When I fire up the email client it accurately sends the mail and the attachment to any or all OTHER addressees except the Iridium addressee spits back a message

"The following mobile-terminated message was not queued for delivery:

IMEI: 300234010309710
Time: Thu Mar 20 17:39:38 2014

Reason: Attachment filename is missing

This behavior is VERY strange.  I have tried everything.  But to no avail.  Hope someone can help me solve this one.

I have included the source in the attachment.  No pun intended!

Thanks...
Attachment-Code.txt
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Question by:planetarygrid
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3 Comments
 
LVL 83

Expert Comment

by:CodeCruiser
ID: 39948865
Does it work if you change this

testMessage.Attachments.Add(data)

to

testMessage.Attachments.Add("FilePath")

or

testMessage.Attachments.Add(New Attachment("FilePath"))

?
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Author Comment

by:planetarygrid
ID: 39949018
No, it does NOT work!!!  As you may have noticed in my code, I am creating the attachment from a Stream.  Again, this DOES work and is recognized and received properly by other mail servers, but not the Iridium mail server.  I believe the attachment must be encoded Base64, however I cannot find any way to do that with .NET smtpClient namespace....
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CodeCruiser earned 2000 total points
ID: 39949927
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