Reporting Spam
The spam reporting process for receivers using the Border Patrol MTA is now greatly simplified.  Just forward the spam (with headers) to spamreports@<your domain>.  If the report is within 24 hours of when the spam was sent, and it has a valid authentication code, it will count against the sender's reputation.  This process is only for spam that has been whitelisted to your inbox. Any message in your quarantine has already been through our spam filter, and the score added to the sender's total.
 

Authentication Record Compiler
I'm putting the final polish on a compiler that will extract, sort, and put in canonical form, the IP blocks found in a sender's DNS records.  Just send an email to 'test at open-mail.org', and our Registry will be automatically updated with data from authentication records in your own DNS.  You will also get an email response showing your records in a nice tabular form.  See Email Interface for details.

Choosing a Name
I've never felt comfortable with the name Registry of Public Email Senders.  It's too long.  The concept of "Sender" is poorly defined.  It's just too dull to remember.  How about we change it to Registry of Internet Transmitters?  Yes, I know the word transmitter is foreign to email, but that is actually an advantage, having no conflicts with existing terminology.  A quick Google search shows no conflicts in the field of email.  There are some products which are actual radio transmitters, but that use is clearly distinct from what we are doing.  See this QnA for more discussion, and let me know what you think.

Latest Spam Ratings
Preliminary data for now, but still quite interesting.  There are huge differences between senders.  Reputation can be a very effective tool against spam.  I'm seeing almost no spam from reputable senders.

SpamFinger Addresses
Disposable addresses, as many as you need, for mailing lists and suspicious websites.  See this link for details.