ADD is (and must be) case sensitive. If the user is already subscribed under an equivalent address, you get a warning. LISTSERV can't know whether you sent the command twice by mistake, or wanted to correct the subscription because the old address was in the wrong case. So it just adds the user tells you to check it out. Commands like SET only affect the address that is closest to the one you type, otherwise it would be impossible to register a user under (say) both Internet and BITNET addresses with one of the two addresses set to NOMAIL. DEL and SIGNOFF removes anything that matches. So the only way you can get yourself subscribed twice to a list under slightly different addresses is through the help of the list owner. Eric