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IIS 6 SMTP service has emails building up in drop folder.

Hello,

We have several web sites with forms on them that send emails.  They use the SMTP service on IIS.  We have just added a catcha and it has stopped loads of spam however I have now noticed a few genuine emails in the drop folder.  i don't believe these emails are getting through to their destination.  Here is one of the emails:

x-sender: websiteuser@somewhere.com
x-receiver: 0@myserver
Received: from myserver.mydomain.com ([127.0.0.1]) by myserver.mydomain.com with Microsoft SMTPSVC(6.0.3790.1830);
       Wed, 18 Jun 2008 12:45:21 +0100
Subject: 0
Sender: websiteuser@somewhere.com
From: websiteuser@somewhere.com
Date: Wed, 18 Jun 2008 12:45:21 +0100
To: client@theirdomain.com
CC: "0" <0>
X-Priority: 3
X-MSMail-Priority: Normal
Content-Transfer-Encoding: Quoted-Printable
MIME-Version: 1.0
X-Mailer: JMail 4.4 by Dimac
Content-Type: text/plain;
      charset="iso-8859-1"
Return-Path: websiteuser@somewhere.com
Message-ID: <WAIKAWAUIEAOeIiGXix0000001a@myserver.mydomain.com>
X-OriginalArrivalTime: 18 Jun 2008 00:45:21.0796 (UTC) FILETIME=[96979C40:01C8D0DC]

Message body...

---

The first thing I find odd is the "x-receiver: 0@myserver".  Should this be like this or is this field incorrect?
Does anyone know why these emails are ending up in the drop folder?  Are the clients email servers rejecting them because of spam filtering?  Why do emails end up in the drop folder?  All the email addresses are correct as I can take the .eml file out of the folder and send it using Outlook on my machine.

Thank you
Tom
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TomMonkey
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TomMonkey
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1 Solution
 
debuggerauCommented:
that quite normal that the servers name is inserted here, however is it an alias address?

http://www.bellaonline.com/articles/art27166.asp

You could drag drop them into the pickup folder again and they should be resent, but ensure the aliases are removed.
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TomMonkeyAuthor Commented:
Hi debuggerau,

Thanks for the quick response.

I don't think any of the addresses are aliases.  There certainly isn't one for 0@myserver.

I read the article and it makes sense.  The problem I have is that the websiteuser@somewhere.com is always going to be different depending on who fills out the form on the website.  Is the article implying that I need to set up and alias for every domain that they could be sending from?

Should I just change the default domain's drop directory to be the pickup folder?

Cheers
Tom
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TomMonkeyAuthor Commented:
Also I tried dragging the emails in the pickup folder but they instantly appear in the drop folder again.
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debuggerauCommented:
otherwise were they test emails to its own domain maybe?
http://www.windowsitlibrary.com/Content/141/09/1.html
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TomMonkeyAuthor Commented:
I definitely think the problem has something to do with "x-receiver: 0@myserver".  That seems to make it think it's destined for myserver rather than the actual domain.  The default rule for myserver, defined under 'Default SMTP Virtual Server > Domains > myserver' is to put it in the drop folder.  Is there a way to make it forward these on to the smarthost?  Can I stop this x-header appearing in the first place?

Cheers
Tom
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TomMonkeyAuthor Commented:
Another one just came in and I altered the x-receiver to match the to field and dragged it to the pickup folder.  The email seemed to disappear after that.  Is there anyway to stop this x-header from appearing or correct it?

Cheers
Tom
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debuggerauCommented:
you need the header, and your the action is normal.
Since the drop folder is the delivery location for your server, if the server name was used as the destination, thats where emails will go.
so your x-receiver file will be the destination domain address and needs to be accessible from your DNS server..

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TomMonkeyAuthor Commented:
Thanks for the help.  In the end we changed the settings in Jmailer to use the smart host directly instead of going through IIS.
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