QUOTE(kgagne @ Aug 14 2007, 02:29 PM)

I have full headers of the messages that are not making the leap from Gamebits to Spamcop, though I'm hesitant to post them here - I've found posting email addresses in the Spamcop forums result in those addresses getting spammed, unfortunately.
Posting e-mail addresses anywhere on the 'net' will allow for scaping. You should note that I mad a modifiation 'here' that doesn't allow e-mail addresses to show up as 'normal' ... suggestion being that your alleged spammer is going to a lot of ectra work to identify, extract, and use that info as 'seen' here. (OK, maybe not a 'lot' work, but definitely not the standard "grab any data surrounding an "@" sign .... )
QUOTE
What can I do with this information to help me resolve the situation?
Same stuff suggested to Bonnie ... see if you can get server logs that would identify 'failed' attempts at sending e-mail to the SpamCop e-mail servers. Have you asked Gamebits.net what filtering they (or their upstream) actually have in place? Have you tried to directly forward any of that e-mail yourself from Gamebits.net to your SpamCop.net e-mail account and had it arrive (usual test mode here is to also CC: it to some other e-mail address to see if it arrives there, and thus having the precise header data to start specific queries) ... But again, sll this is pretty well documented in a number od
SpamCop FAQ entries 'here' .....