[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [X] [Y] [Z] UCE (Unsolicited Commercial Email) uninstalling sendmail, RPM Package Manager updates, closing security holes upgrading sendmail overview reasons to RPM source code use_cw_file feature 2nd implementing user accounts, routing to user database, enabling user ID, default, security and User unknown errors, correcting userid , Cyrus SASL users .forward files, defining local, preventing replies to spam spam checking per user identifying problem users trusted confTRUSTED_USERS defining UUCP mail, relaying UUCP_RELAY define |