Mickey published Bounce P.I. where senders can paste in an error message or bounce and it will tell you what filter generated it. If the rejection is unrecognized, it will flag the message internally and it will be researched to see if the filter can be identified.

Steve has a new tool at the DKIMCore site. The key generating tool and the record checking tool have been up for a while. This weekend, though, he published a tool to check the validity the DKIM record published in DNS. Tool output shows if the record is valid, the version and the public key.

What is ARF?

ARF stands for Abuse Reporting Format. It is a standardized format intended to make processing of automated abuse reports (or feedback loop reports) easier. Word to the Wise has published tools to help recipients process ARF formatted reports and help developers create tools to handle ARF formatted reports. Abacus also supports ARF format out of the box.

I do apologize for the light blogging recently. I have a couple big deadlines on my plate. I hope to get back to regular blogging soon.

If the traffic storm keeps up for more than a day or two we’ll make other arrangements for the blog.

Some of these tools are provided by ISPs, like Hotmail and AOL have postmaster webpages. Hotmail also provides things like SNDS so you can monitor what Hotmail is seeing about your network.

Al has a new blacklist stats center over at DNSBL.com. Of interest is the accuracy of some of the widely used lists like Spamhaus, Spamcop, and PSBL. Other lists like FiveTen were wildly inaccurate. In fact, Al has shown that blocking mail from any IP with a 7 in it is more accurate (more spam hits, less non-spam hits) than FiveTen.

ReturnPath provides free reputation lookup and monitoring based on the data they acquire.