Thanks for the info but what is the solution for my problem in this case?

regarding full configurationaaa new-model!!aaa group server radius VPNClient server-private x.x.x.2 auth-port 1yy5 acct-port 1yy6 key 30017!aaa authentication ppp default localaaa authorization network default if-authenticated!aaa session-id common!r...

Hello friends,when I tested my smtp server behind cisco router 2811 I did this220 oamex02.oam.ca Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at Fri, 28 Mar 2008 06:36:17 -0400HELO oam.ca501 5.5.4 Invalid Addresshelo oam.ca250 oamex02....