Yes! It appears that the recipient has gone on vacation and let his mailbox
> In a message dated 3/30/00 6:37:20 PM Eastern Standard Time,
> Postmaster@montevallo.edu writes:
> > The attached message could not be delivered to the following recipients:
> > firstname.lastname@example.org
> > Often this is caused by a recipient having insufficient room to store
> > the message. Network communications problems can also cause this.
> > Check with the recipient(s) and/or try again later.
> Is any one else getting these?