Try this and see if the problem (eventually*) goes away:
 
SET ADS-L SHORT822 FOR [log in to unmask]
 
This will cause NEW ADS-L distributions to be generated
with just her name in the RFC822 TO: field.
 
/Pete Weiss,
 Penn State
 
* eventually -- remember that LISTSERV command actions and mail
  already in the distribution pipeline are not synchronized