Quoting InterNetworX | Pascal Heverhagen <p...@inwx.de>:
Hey users, I've got a constellation with dovecot, postfix, froxlor and roundcube. My problem is, when a user has got a paragraph sign in his password, every mail client tells him, that he entered a wrong password. The log says as usually "password mismatch". did anyone else fixed this problem already?
non-ASCII characters are only supported in the AUTHENTICATE command. My guess is that your MUA is trying to send those characters via the LOGIN command.
michael