We keep getting e-mail attachments in winmail.dat files, and can't open them. What's going on? Is there a utility that can extract the attachments from these?

I HATE winmail.dat files but have to deal with them every so often because we are still running Lotus Domino/Notes. I actually found a freeware utility that lets you open them and extract the ...

Problem: You can’t open files you receive from Windows users. Solution: Convert Winmail.dat files.

Many times when receiving mail attachments with the new Exchange-enabled Microsoft Entourage v.X from Windows users, you will get a winmail.dat file that is inaccessible under Mac OS X. Alan Sill ...

We just switched out SMTP Proxy from our Watchguard Firewall to our Meridius SPAM Filter and so far it is working a lot better. We are getting some complaints that winmail.dat files are being ...

So instead of seeing the "rich text" formatting of the original message, you get a plain-text copy, plus a mysterious "winmail.dat" attached file.

I was confused by your answer regarding winmail.dat. The file cannot be opened traditionally, at least to obtain what the receiver believes to be valuable contents. Rather, it's used internally by ...