How do I need to format a text file so that it can be read by an SMTP service to send an e-mail that has an attachment?
We have a server where we are using II6 SMTP to send mail from a Pickup folder. The goal is to drop a properly formatted text file into Mailroot\Pickup and then the file will be automatically processed and sent to the correct SMTP recipient.
For simple files, this works correctly. Here'
s an example of a simple file that works (domain names changed):
From:
[email protected]
To:
[email protected]
Subject:Hello World!
Test Body Of The E-mail
When I drop a text file containing the above contents into the Mailroot\Pickup folder, it sends correctly. However, I haven't been able to figure out how to get an attachment to work.
I found some material that explained how to encode an SMTP attachment and another tool for simple base64 encoding conversion. Using the information on those pages, I came up with the following text:
From:
[email protected]
To:
[email protected]
Subject:Hello World!
MIME-Version: 1.0
Content-Type: text/plain;
boundary="Attached"
Content-Disposition: inline;
--Attached
Content-Transfer-Encoding: base64
Content-Type: text/plain;
name="attachment.txt"
Content-Disposition: attachment;
filenamename="attachment.txt"
VGhpcyBpcyBhIHRlc3Qgb2Ygc29tZXRoaW5nIHRvIGVuY29kZS4NCk5ldyBsaW5lDQpOZXcgTGlu
ZQ0KIkhlbGxvdyIgISEhDQo9PT09ICcgZnNkZnNkZiAxMjM1NDU2MzQzNA==
--Attached--
However, when I place the above text in a file and drop it into Mailroot\Pickup, it doesn't send an attachment correctly. Instead, an e-mail shows up with the following in the body of the e-mail:
MIME-Version: 1.0
Content-Type: text/plain;
boundary="Attached"
Content-Disposition: inline;
--Attached
Content-Transfer-Encoding: base64
Content-Type: text/plain;
name="attachment.txt"
Content-Disposition: attachment;
filenamename="attachment.txt"
VGhpcyBpcyBhIHRlc3Qgb2Ygc29tZXRoaW5nIHRvIGVuY29kZS4NCk5ldyBsaW5lDQpOZXcgTGlu
ZQ0KIkhlbGxvdyIgISEhDQo9PT09ICcgZnNkZnNkZiAxMjM1NDU2MzQzNA==
--Attached--
I can't figure out what I need to do to format the text file so that the SMTP service correctly sends attachments.
