RCN also appears to be silently discarding outgoing spam submissions to spamcop.* None of my submissions to spamcop sent through RCN's SMTP server have gone through. And yes, I have tried adding myself to the CC field of submissions, among other tests to rule out alternative possibilities. If I'm able to get any notable information from them concerning the issue, I will report back. * I don't expect that there will be any confusion, but to make clear, the filtering is based on e-mail content, not the recipient -- in this case spamcop.