Hi everone! I use ser 0.8.14 with auth_radius and group_radius and get from time to time messages like the following in my logs: Feb 9 01:20:49 sip.xxx.com /usr/sbin/ser[1829]: rc_ip_hostname: couldn't look up host by addr: D4754D54 Feb 9 01:20:49 sip.xxx.com /usr/sbin/ser[1829]: rc_send_server: no reply from RADIUS server unknown:1812 Can anybody tell me where they come from? I cannot experience any negativ effects of these messages, like users unable to register, etc. Best regards Kai -- Kai Militzer WESTEND GmbH | Internet-Business-Provider Technik CISCO Systems Partner - Authorized Reseller Lütticher Straße 10 Tel 0241/701333-11 km(a)westend.com D-52064 Aachen Fax 0241/911879