Losing attachments between Outlook and OE

I wanted to poll the crowd and see if I was out in new territory or reinventing the wheel. I have several remote users who (for some strange reason) do not receive some of their attachments from the home office. I've already looked at all of the information about OE6 and the problems that SP1 causes, but the paperclip icon is not showing up at all. Some attachments show up just fine and others don't. Does anyone know where I can find a list of discrepancies between Outlook and Outlook Express? I'd like to find a list of which versions of Outlook Express can open attachments sent by which version of Outlook.
It won't be a fun task, so I appreciate any references or guidelines out there.
Thanks!
Jeff

 

Already checked that one

Steve,
Thanks for the info, but I've already looked into that one. It's not blocking the email as much as it seems to just have a problem finding it. And it's not one particular type of attachment either. I've sent the exact same file from a WinXP/Outlook XP system and a Win98/Outlook 98 system and only the one from XP came through. That's what is so frustrating about it, it doesn't happen on every computer. Thanks for the input though!
Jeff

 

Ensuring that all attachment carrying mails are sent in plain text format might help.

 

I think I've found it, but I don't know what to do with it...

Thanks for the advice brett, but I tried sending messages in HTML, Rich Text, Plain Text, and Word formatting and all of them turn out exactly the same in the end. I did a little bit of research and found a but that was supposed to be fixed in the MS Exchange 5.5 Service Pack 1 but we are currently running at Service Pack 4. The knowledge base article is Q182232 and it is doing exactly what the article says. The line:

X-MS-TNEF-Correlator: <5913080CA46DD111A98200A0C9960C101E3C@test.com>

is wrapping and is not staying on one line which looks like it is causing the problem. The workaround specified was to turn off rich text formatting on the sending end. Is there some flag somewhere which I'm not aware of which turns on rich text formatting even when you're sending in plain text? On the messages where the attachments are not making it through, I get the following message when looking at the message source:

This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible.

I checked and all of the emails are coming through with MIME-Version: 1.0 and even the ones that have attachments acknowledge the fact that it is a "multi-part message in MIME format... "

So I am already way out of my league on this one and still digging. Any more ideas for where I could look up more information?
Thanks!

 

http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q197066&

 

Still an ongoing problem...

Brett,
I think I've found something here. http://support.microsoft.com/default.aspx?scid=kb;en-us;Q181953
Unfortunately, I'm not really sure what to do with it. I've changed the client side email to send as Plain Text and HTML and neither one gets the attachment through. On looking through the message source, it still shows the "X-MS-TNEF-Correlator:" message. So my assumption is that it is a setting in Exchange 5.5 that is causing the problem. Does anyone know where I can turn off the settings causing it to convert all messages to TNEF?
Thanks,
Jeff

 

One more note...

I did find one place where it refers to using Rich Text Formatting either "Always ", "User ", or "Never ". This is on the Exchange Server computer's Administrator program, go to Internet Mail Service, Internet Mail property page, Advanced Options. It is the "Send Microsoft Exchange rich text formatting" option is set to "User ". To me, this means that if the user specifies Rich Text, it will use it, if not, it won't. Am I just being way to logical on this one and missing something?
Thanks,
Jeff

 

Maybe now would be a good time to move this issue to a dedicated newsgroup such as microsoft.public.exchange.misc.

Good luck!

 

Got it!!!

I finally figured this one out right before 5 o'clock yesterday. It turns out that there is a setting on each individual mailbox which forces all items into Micrsoft Exchange Rich Text that are sent out. It turns out that this is a known issue with Microsoft Exchange Server 5.5 and they don't have anything to fix it yet other than unchecking that box. You can find out more information about it by looking up Microsoft Knowledge Base Article - Q181953. For all those interested, below is the steps to prevent all messages being sent going out as Rich Text.

On the individual mailbox properties, choose the Protocols tab. Select the protocol "POP3 (Mail)" and click "Settings ". Then unselect "Use Protocol Defaults" (if selected) and then uncheck "Use Microsoft Exchange Rich Text ". Then your users connecting through a POP3 account should be able to view their attachments as this removes the TNEF formatting on the message. I hope this helps a few other people out.
Thanks for all your help Brett!
God Bless,
Jeff

 

Glad you've resolved it