Can someone explain the following?   Here are the names and
addresses of people subscribed to my list.  They subscribed themselves
so I presume the addresses are correct and legitimate.
 
 
[log in to unmask]              James Barnes, Jr.
[log in to unmask]             Barbara Semonche
[log in to unmask]              karen c blansfield
 
-----------------
 
       Here are the error messages I have been getting from the mailer
and PSU:
 
 
PSUVM.PSU.EDU unable to deliver following mail to recipient(s):
    <barnes@tipper<.oit.unc.edu>
PSUVM.PSU.EDU received negative reply:
550 <[log in to unmask]>... User unknown
 
PSUVM.PSU.EDU unable to deliver following mail to recipient(s):
    <[log in to unmask]>
PSUVM.PSU.EDU received negative reply:
550 <[log in to unmask]>... User unknown
 
           ** TextConnected to tipper.oit.unc.edu:
>>> RCPT To:<[log in to unmask]>
<<< 550 <[log in to unmask]>... User unknown
550 karen@gibbs.oit.unc.edu... User unknown
 
     Why is the mailer attempting to deliver to a wrong address? Surely
if there have been changes at the site they should have been aliased
so that the list would not get such bounces needlessly?