[Gambas-user] No attachment

[Pozzo]

I'm sorry for the Off-Topic but I need someone who can help me, I'm 
reciving the mailing list with Mozilla under Windows and when someone of 
you send an attachment I recive only strange letters like:
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with a header like

---NextPart_001_01C3E395.ABB46D5E
Content-Type: application/ms-tnef;
	name="winmail.dat"
Content-Transfer-Encoding: base64

I don't understand what is happening! Can someone help me???
Thanks

Maurizio