Also check if RIPOnly is enabled.
Check out the DNASs sc_serv.ini/conf configuration file for the section (default shown below):
code:
; RIPOnly, when set to Yes, will only allow IP addresses listed in the Reserved
; IP list to connect and relay. All other connections for listening will be denied.
; This is really only useful for servers whose sole purpose is to provide the
; primary feed to all public relays. Setting this value to Yes also forces the
; server into Private mode, since listing this server in the directory would
; be pointless. Default is No.
; RIPOnly=No