[Exim] Received: header not RFC2821 compliant?

Hi,

One of our users forwarded a message that they received from Spamcop
today saying that the Received: headers coming out of our Exim
installation weren't in compliance with RFC2821.

The user was apparantely forwarding a piece of spam to Spamcop, and
Spamcop couldn't parse the Received headers correctly.

Specifically, Spamcop sent this warning:

    The Received header is not being created properly by your MTA.  From
    RFC2821:

    Stamp = From-domain By-domain Opt-info ";"  FWS date-time
    From-domain = "FROM" FWS Extended-Domain CFWS
    Extended-Domain = Domain /
               ( Domain FWS "(" TCP-info ")" ) /
               ( Address-literal FWS "(" TCP-info ")" )
    TCP-info = Address-literal / ( Domain FWS Address-literal )
          ; Information derived by server from TCP connection
          ; not client EHLO.

    So, the line is *supposed* to look something like this:

       > Received:  from your-w92p4bhlzg ([12.246.204.28])
       > by iglou.com with smtp (Exim 4.05) id 17PrkX-0003Wo-00;
       > Wed, 03 Jul 2002 17:33:21 -0400

Is this legitimate or is Spamcop taking a too literal reading of RFC2821?
I glanced through it, but those RFC syntax definitions make me ill. :)

Regards,

Dean Brooks
dean@???