January 25th, 2008

Why is winmail.dat blocked? What is winmail.dat?

winmailico.pngEmail users sometimes find that they receive email messages with a strange file attached, called winmail.dat. When they attempt to open this file, either it can’t be opened at all, or it contains “garbage” data.

The situation causing this is that people are using several different email client programs to receive, read, and send email.  Unfortunately, Outlook does not “play nice” with the other email programs all the time. This causes problems, not for the sender of the email, but the recipient, particularly when actual files are attached to messages.

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