Many of these schemes are based on worms that can read an e-mail address book and then use the addresses to send more and also use the addresses as the sender name. So if the address was in an e-mail address book anywhere, it's possible for the worm to find it.
A second possibility is that someone's e-mail server is being used to capture addresses.
Another possibility is that the addresses are publicly visible here on Interact. Can you see each other's addresses? If so, a robot can collect them.
Still another is that addresses are being randomly generated. fromjriver would be a logical one.
There are other possibilities, but WE DO NOT PROVIDE YOUR ADDRESS TO ANYONE ELSE.
1. My e-mail address would not be in ANY address book, I have never had e-mail contact with anyone else here, only your board's database knows it AFAICS.
2. Unlikely since I've never sent an e-mail from that address and only 1 has ever been delivered to me when I registered some time ago.
3. My e-mail address is marked "Hidden" in my member record.
4. 'fromjriver' is extremely UNLIKELY IMO.
MANY MEMBERS ARE REPORTING THIS. If you say you don't pass on e-mail addresses given to you then I'll accept that, however it seems highly suspicious that the recipt of this scam by so many members means the source of the e-mail addresses IS YOUR BOARD.
If you refuse to accept that as a possibility, as you are doing by invoking that list of possibilities which I have easily demolished, then clearly customers and potential users of this board need to be wary, because your systems could have been compromised and you appear to be doing nothing to look into it.