#This patch was created by Matthew Kanar <mattkanar@hotmail.com> for courier-imap-3.0.0
--- ../courier-imap-2.2.2.20040207/authlib/authvchkpw.c	2004-01-14 22:17:01.000000000 -0500
+++ authlib/authvchkpw.c	2004-03-02 12:52:52.000000000 -0500
@@ -190,7 +190,7 @@
 	 *   - user's password field in the passwd entry is empty
 	 *   - supplied current password doesnt match stored password
 	 */
-	if (vpw->pw_passwd || authcheckpassword(pass, vpw->pw_passwd)) {
+	if (vpw->pw_passwd == 0 || authcheckpassword(pass, vpw->pw_passwd)) {
 		errno=EPERM;
 		return (-1);
 	}