Winmail.dat intermittently appearing SBS 2003 SP2 Outlook Clients

[Lee Baker]

Hi
I have this problem with winmail.dat files, but even after searching the
forums, I have not found an answer.
I have a SBS 2003 Server SP2, Outlook 2003 SP3 clients
I have so far changed the outgoing email to be HTML and plain text at the
client end.
I am unable to change the way internal emails are sent using the properties
of the email address as this is info is received directly from the Exchange
system and AD.
I have set the default options in the user properties under Exchange
features Tab -Protocols- POP3 to not use Protocol defaults but to use MIME
html and unchecked the Use Microsoft Rich_Text format Box.

I have even changed the Exchange System Internet Message Format by right
clicking on the default and setting the same option, just in case its still
overiding the previous change.

Still winmail.dat is occasionally coming through, I suspect this to be an
exchange problem as it seems that outgoing mail is not affected.

This only really started about a couple of weeks ago on one of our customers
servers and now we have 3 servers both exhibiting the same issue.

 

[Oliver Vukovics]

Hi Lee,

did you checked this sites:

"How to Prevent the Winmail.dat File from Being Sent to Internet Users"
http://support.microsoft.com/kb/138053/en-us

"How e-mail message formats affect Internet e-mail messages in Outlook"
http://support.microsoft.com/kb/290809/en-us

Winmail.dat attachments are included in received e-mail messages in Outlook
http://support.microsoft.com/kb/278061/en-us

Maybe it helps.

 

[Lee Baker]

Do you not read peoples posts before you reply with yours. Its not very
helpfull just to automatically reply. dohnut

 

[Oliver Vukovics]

Hi Lee,

in your first E-Mail I missed the information about the"TNEF" setting,
which is dscribed on this site:
http://support.microsoft.com/kb/290809/en-us

in the part "Follow these steps to turn off TNEF"

Do you use the "Personal Addressbook" on all clients? Also this information
were not in your first E-Mail.

Do you get (in addition to the Winmal.dat attachments) any further
attachments:

"When an e-mail client that does not understand TNEF receives a message that
contains TNEF information, the following are the three common results:"

This three results were described on the website.

You wrote what you did (changed) but on this websites are some further
information how you would get more information about your behavior. Did you
compare the e-mail with the Winmail.dat file, with one of the three results?

On this website: http://support.microsoft.com/kb/278061/en-us
is another link about the settings of the IMC in Exchange (XFOR: Preventing
Winmail.dat From Being Sent Over IMC):
http://support.microsoft.com/kb/149203/en-us

I saw no information in your E-Mail if you change/checked the IMC.

Do you not read peoples posts before you reply with yours.

I read it and I understand what you changed, but on the websites I posted
were some further information for you.

It is not important what you read, it is important what you understand. ;-)

Maybe it helps.

--
Oliver Vukovics
Share your Outlook PST files without Exchange: Public ShareFolder
Synchronisation for Outlook and Exchange: Public SyncTool
http://www.publicshareware.com

 

[Lee Baker]

Hello

I did change the settings in the IMC even tried uuencode instead of MIME
just to make sure the suers were sending through exchange, None of these
worked TNEF also has no affect as the only way I can see that would be used
is for Voting options or delivery requests. I am presuming these relate to
the Internet Mail SMTP connector that I have setup from scratch when I first
read about it in one of the KB articles.

None of these would explain why this problem has suddenly occured over the
past few weeks, it all points to an update or something from MS.

 

[Lee Baker]

:

MSN (e-mail address removed)

 

[Lee Baker]

I have just spent the best part of 4 hours online (paying) for technical
support from MS, and as yet have still not found a solution to this problem.

Firstly the enginner asked me what "this file might be harmfull" popup meant
in outlook, didn't make me feel very confident, then got me to install all
the service packs from MS including Excange SP, even though I had installed
all of these, and they were reported installed by MS update history, anyway
this still has not sorted the problem, finally we shut down ALL (including
AV) 3rd party software from starting at boot. hopefully more luck tommorow,

 

[Lee Baker]

Well it seems that something is changing the format after it leaves the domain.
My feelings are an antispam/av server at third party maybe to blame.