"Peter C" wrote...

I am using Microsoft Outlook 2000 OS Windows 2000

When i send an attachment with an e-mail, my colleauges recieve them as
.dat
files.
If i send them a pdf, or excel or word document they are all recived as
.dat. This has only just started happening

Thanks in advance

What are your email sending options? If you're sending email in RTF
(Microsoft's Rich Text Format), you may have folks saying they're getting
winmail.dat files that they can't open. The fix is for you to change from
RTF to something else like plain text, html or whatever else Outlook 2000
offers.

Craig