I had sent an instance of accounting request from my vpn server to radius server. you send me that I haven't got anything configured in the accounting section. do you mean that vpn server frame is correct but accounting section in radius server doesn't work?

rad_recv: Accounting-Request packet from host 10.10.10.3:11858, id=133, length=260 Acct-Status-Type = Start Acct-Delay-Time = 0 NAS-IP-Address = 10.10.10.3 Service-Type = Framed-User Framed-Protocol = PPP NAS-Port = 4 MS-RAS-Vendor = 311 MS-RAS-Version = "MSRASV5.20" NAS-Port-Type = Virtual Tunnel-Type:0 = PPTP Tunnel-Medium-Type:0 = IP Calling-Station-Id = "192.168.201.59" Tunnel-Client-Endpoint:0 = "192.168.201.59" Microsoft-Attr-35 = 0x4d5352415356352e3130 Microsoft-Attr-34 = 0x4d535241532d302d312d34304432 454332364243374334 Acct-Session-Id = "118382" User-Name = "school" Framed-IP-Address = 10.10.10.4 Framed-MTU = 1400 Session-Timeout = 389554 Idle-Timeout = 1200 Acct-Multi-Session-Id = "953" Acct-Link-Count = 1 Event-Timestamp = "Dec 31 2008 15:45:03 IRST" Acct-Authentic = RADIUS MS-MPPE-Encryption-Types = 0x00000000 Sending Accounting-Response of id 133 to 10.10.10.3 port 11858