1. The NCSUVM LISTSERV is 1.5i and does not support mixed case addresses. 2. It do not plan to uppercase both strings before comparing. Most comparisons are done by searching the userid@node into a disk file, and neither EXECIO nor LSVFILER accept a "CASE U" option on such searches, nor do I have time to waste on such a mod to LSVFILER. Note that this is a painful mod as it requires obtaining a variable-sized buffer into which the current record can be upcased, etc. You have to make a choice, if you want case sensitiveness, you will get pure, sheer undaunted case sensitiveness. 3. It is OUT OF QUESTION not to uppercase the string if ".uucp" can be found in it. Tomorrow you will ask for ".mikado", then for ".unixsnet", etc. The next day you will say that if there is a "!" sign in the userid, it should not be upcased. There would be a bunch of places to change besides, and I don't have time for this either. If these changes were at least needed by decent, sensible people... But UNIX(*) fanatics! Eric (*) UNIX is a tradecrap of the AT&T Ball Lavatories PS: The opinions expressed herein do not necessarily match those of my school, which hosts the central office of the french UNIX users association.