il messaggio arriva (per modo di dire...) da info@microsoft.com ed il testo contenuto è questo qui sotto:

New MyDoom Virus Variant Detected!

A new variant of the W32.Mydoom (W32.Novarg) worm spread rapidly through the Internet.
Anti-virus vendor Central Command claims that 1 in 45 e-mails contains the MyDoom virus.
The worm also has a backdoor Trojan capability.
By default, the Trojan component listens on port 13468.

Protection:
Please download this digitally signed attachment.
This Update includes the functionality of previously released patches.

+++ ©2004 Microsoft Corporation. All rights reserved.
+++ One Microsoft Way, Redmond, Washington 98052
+++ Restricted Rights at 48 CFR 52.227-19

****************************************************

a questo indirizzo info ed anche il tool per rimuovere il virus
http://www.symantec.com/region/it/avcenter.html