Help me interpret this email header

[Jizzle]

This came from some Spam I received:

Received: (qmail 8302 invoked by uid 504); 9 Oct 2005 10:15:37 -0000
Received: from unknown (HELO -1224936104) (218.61.5.233)
by <obfuscated>.com with SMTP; 9 Oct 2005 10:15:37 -0000
Received: from kyokodate.com (-1275885448 [-1275931656])
by cncln.online.ln.cn (Qmailv1) with ESMTP id 1D4A85A2A5
for <obfuscated>; Sun, 09 Oct 2005 05:15:37 -0500

Does -1224936104 correspond to 218.61.5.233? If so, how?
Similarly, what's the relationship between -1275885448 and -1275931656

Does all this have something to do with representing IP addresses in decimal?

Thanks,

Jizzle

[noid]

Thats probably a time offset, its usually done in seconds, thats why its so large.