diff -ur courier-authlib-0.56.orig/checkpasswordmd5.c courier-authlib-0.56/checkpasswordmd5.c
--- courier-authlib-0.56.orig/checkpasswordmd5.c	2004-10-21 02:10:49.000000000 +0200
+++ courier-authlib-0.56/checkpasswordmd5.c	2005-08-09 12:27:03.000000000 +0200
@@ -25,7 +25,11 @@
 
 	if (strncasecmp(encrypted_password, "{MD5}", 5) == 0)
 	{
-               return (strcmp(encrypted_password+5, md5_hash_courier(password)));
+        	int a = strcmp(encrypted_password+5, md5_hash_courier(password));
+		if (a != 0)
+		    return (strcasecmp(encrypted_password+5, md5_hash_hex(password)));
+		else
+		    return(a);
 	}
 	return (-1);
 }
diff -ur courier-authlib-0.56.orig/md5/md5.h courier-authlib-0.56/md5/md5.h
--- courier-authlib-0.56.orig/md5/md5.h	2002-12-12 05:23:58.000000000 +0100
+++ courier-authlib-0.56/md5/md5.h	2005-08-09 12:26:27.000000000 +0200
@@ -56,6 +56,7 @@
 
 const char *md5_hash_courier(const char *);
 const char *md5_hash_raw(const char *);
+const char *md5_hash_hex(const char *);
 
 #ifdef	__cplusplus
 } ;
diff -ur courier-authlib-0.56.orig/md5/md5_hash.c courier-authlib-0.56/md5/md5_hash.c
--- courier-authlib-0.56.orig/md5/md5_hash.c	2002-12-12 05:23:58.000000000 +0100
+++ courier-authlib-0.56/md5/md5_hash.c	2005-08-09 12:24:05.000000000 +0200
@@ -11,6 +11,8 @@
 static const char base64tab[]=
 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 
+static const char hextab[] = "0123456789abcdef";
+
 const char *md5_hash_courier(const char *passw)
 {
 MD5_DIGEST md5buf;
@@ -44,3 +46,19 @@
 	hash_buffer[j]=0;
 	return (hash_buffer);
 }
+
+const char *md5_hash_hex(const char *passw) {
+    MD5_DIGEST md5buf;
+    static char hash_buffer[2*sizeof(md5buf)+1];
+    int i, j = 0;
+
+    md5_digest(passw, strlen(passw), md5buf);
+
+    for (i=0; i<sizeof(md5buf); i++) {
+	hash_buffer[j++] = hextab[(md5buf[i] & 0xF0) >> 4];
+	hash_buffer[j++] = hextab[md5buf[i] & 0x0F];
+    }
+
+    hash_buffer[j]=0;
+    return (hash_buffer);
+}