sendmail sec

Hi all, Returning from a week long job I have found events logged like that below. Unusual System Events =-=-=-=-=-=-=-=-=-=-= Nov 29 05:31:33 mand -- MARK -- Nov 29 05:42:33 mand sendmail[16558]: NOQUEUE: Null connection from IDENT:root@ns1.excitesystems.com [209.25.174.2] Nov 29 05:42:33 mand popper[16559]: refused connect from root@209.25.174.2 Nov 29 05:42:33 mand in.telnetd[16560]: refused connect from root@209.25.174.2 Nov 29 05:42:34 mand in.telnetd[16561]: refused connect from root@209.25.174.2 Would anyone help me understatnd these - especially that of sendmail? /-------------------------/ Antal Leisen webmaster@kreorg.hu Kreorg Educational Center Budapest, Hungary