File extension automatically changes from .ppt to .dat when sending email

R

Rusky

Limp Gawd
Joined
Jan 4, 2005
Messages
380
Has anyone every heard of anything like this?

My friend has a problem that when he send an email through Microsoft Outlook, it automatically changes the extension of the file from .ppt to .dat
 
Was the file that was being changed an attatchment? If not then what is it?
 
From what I know it is being sent from outlook to outlook and the extension changed after it was sent.
 
There could still be a Lotus Domino server involved somewhere. Domino servers have a lot of problems with attachments sent from Outlook, even if the recipient is using Outlook. The other end gets either a .dat file or no attachment at all. We ended up having to use Yahoo webmail accounts to send critical attachments around the email servers.

Domino also has really bad problems with Outlook's rich text format. Try sending it again as plain text.
 
Zamboni said:
There could still be a Lotus Domino server involved somewhere. Domino servers have a lot of problems with attachments sent from Outlook, even if the recipient is using Outlook. The other end gets either a .dat file or no attachment at all. We ended up having to use Yahoo webmail accounts to send critical attachments around the email servers.

Domino also has really bad problems with Outlook's rich text format. Try sending it again as plain text.
Click to expand...

Yeah and unfortunately this is what the government decides to use, as well as several large government contracted buisneses. :eek:
 
Set Outlook to send to those recipients in Plain text. Somemail systems that don't understand Mime encoding end up having emails from Exchange appear as a winmail.dat file. Doesn't matter if there is an attachment or not.

Having Outlook send to those users as plain text will resolve the issue.

http://support.microsoft.com/kb/278061/en-us
 
Thanks for the link, it looks like that did it.

Once again they community saves the day.
 
Could it possibly just be a extension changes, while leaving the metadata in tact? You could just try renaming it to yourfile.ppt from yourfile.dat and see if that works.
 
Hawk001 said:
Could it possibly just be a extension change, while leaving the metadata in tact? You could just try renaming it to yourfile.ppt from yourfile.dat and see if that works.
Click to expand...
I forgot to ask him about that, thanks for the tip.
 
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