I have just setup an FC4 box with Postfix and Dovecot for mail services. I have two users on the box: userone and UserTwo (note the mixed case in the latter). Sending mail to userone works fine, but not so with UserTwo. $ telnet mybox smtp 220 mybox.mydomain ESMTP Postfix mail from: test@xxxxxxxx 250 ok rcpt to: userone 250 ok quit $ telnet mybox smtp 220 mybox.mydomain ESMTP Postfix mail from: test@xxxxxxxx 250 ok rcpt to: UserTwo 550 <UserTwo>: Recipient address rejected: User unknown in local recipient table quit Postfix puts a message in maillog along the lines of "to=UserTwo, status=bounced, unknown user (usertwo)". Clearly a case(in)sensitivity issue. Is there any way around this? -- Kind regards, John Francis