I'm giving this another shot! I could really use some help if anyone out there could spare a minute. Thank you!!! *** Hello! Muchas gracias in advance to anyone who can help me with this one. I'm a pretty clueless listowner who is trying to change her control file header. Now, I've changed this baby a million times before and I've never had a problem. I thought I knew what I was doing. But this time, I'm trying to fix things so that the list will have a new owner and editor (I'm quitting) and it's just not working. I could swear I'm doing everything right, but I keep getting back this message when I try to PUT the new CFH: <<Invalid RFC822 address - who. << <<PUT operation rejected, old list remains unchanged. Anybody know what's going on? I'm totally stuck. Thanks, Claudia D.