no To: header in emails

[Eric Wood]

 From: "Tom Anderson"
> It's dangerous to assume that no To: header means it is garbage.  You
> may be CC'd along with a group of others by one of your friends (I get
> jokes this way), with nobody specified in the To: field.  Also, valid
> mailing lists sometimes do this.  In any event, I think you'll lose good
> email this way.

Ah.. I see, in fact the recent thread "Spam / ham registration issue" on
this list had missing To: fields also but there were CC: fields.

The particular spam I just got was missing a To: and CC: fields completely.
Would you think it would be safe to /dev/null those emails?

-eric wood