auth: Mention auth_username_chars in log when disallowing username because of it.

diff --git a/src/auth/auth-request.c b/src/auth/auth-request.c
index 06cdfc9eec11f3ee492664c4e4db2d21459e2b68..0022e4ed1297ccf9e9152ade16e7925e185e8941 100644 (file)
--- a/src/auth/auth-request.c
+++ b/src/auth/auth-request.c
@@ -897,7 +897,7 @@ auth_request_fix_username(struct auth_request *request, const char *username,
                        *p = set->username_translation_map[*p & 0xff];
                if (set->username_chars_map[*p & 0xff] == 0) {
                        *error_r = t_strdup_printf(
-                               "Username contains disallowed character: "
+                               "Username character disallowed by auth_username_chars: "
                                "0x%02x (username: %s)", *p,
                                str_sanitize(username, 128));
                        return NULL;