Thanks nick. However when I proxy the message, the message-authenticator field has an <INVAILID TOKEN> (see trace below). Why is this Sending Accounting-Request of id 1 to 10.113.46.170:1813 Acct-Status-Type = Start Service-Type = Framed-User Called-Station-Id = "vlive" Framed-Protocol = GPRS-PDP-Context Framed-Protocol = GPRS-PDP-Context Acct-Delay-Time = 5 Calling-Station-Id = "27829800729" NAS-Identifier = "GMC-GGSN0-13-2" Acct-Session-Id = "20050529" User-Name = "27829800729" User-Name = "27829800729" NAS-Port = 6000 NAS-Port-Type = Virtual NAS-IP-Address = 10.111.14.46 Message-Authenticator <INVALID-TOKEN> 0x00000000000000000000000000000000 Proxy-State = 0x30 �This e-mail is sent on the Terms and Conditions that can be accessed by Clicking on this link http://www.vodacom.net/legal/email.aspx "