[Serusers] using aliases

[Phil Yuska]

Howdy,

I am trying to determine why a call won't connect when dialed using an
alias. I'm running SIP Express Router v0.8.10 on FreeBSD 4.8-RELEASE.

Below is the message the client (Xten X-Lite) is receiving and
apparently discarding. 
It appears as though the call is being routed but I'm puzzled by these
message headers.

RECEIVE << 192.168.1.11:5060
INVITE sip:pyuska at 192.168.1.25:5060 SIP/2.0
Max-Forwards: 10
Via: SIP/2.0/UDP 192.168.1.11;branch=z9hG4bKad62.cf628db7.0
Via: SIP/2.0/UDP 192.168.1.15:5060
From: yuska <sip:pyuska-ppc at shitworks.com>;tag=585911808
To: <sip:5315 at shitworks.com>
Contact: <sip:pyuska-ppc at 192.168.1.15:5060>
Call-ID: 06E1E114-22A1-8B9D-2891-72E17E9928EA at 192.168.1.15
CSeq: 12625 INVITE
Content-Type: application/sdp
Content-Length: 283

Do I need to configure the SER server re-write the To: address or is the
client misbehaving by not responding to the Contact: ?

Any light you could shed on this would be appreciated.

Phil