Index: trunk/packages/sipb-xen-www/code/validation.py
===================================================================
--- trunk/packages/sipb-xen-www/code/validation.py	(revision 647)
+++ trunk/packages/sipb-xen-www/code/validation.py	(revision 648)
@@ -136,6 +136,6 @@
     if not name:
         return False
-    charset = string.ascii_letters + string.digits + '-_'
-    if name[0] in '-_' or len(name) > 22:
+    charset = string.lowercase + string.digits + '-'
+    if '-' in (name[0], name[-1]) or len(name) > 63:
         return False
     for x in name: