How to get excluded from future testing:
The easiest way to be excluded from future testing is to get into the list. It doesn't matter if an IP is listed as an open relay, open formmail, spam source, or dial-up. We automatically exclude from testing all IPs already in our list.
If you're one of those rabid anti-anti-spammer types who thinks 1 relay probe from us every couple of weeks is:
Note: this is not a free pass to be excluded from the list. If we receive spam directly from your IP, it will be added to the list. If we receive what appears to be relayed spam from your IP, it will be tested. Exclusion simply prevents repeated periodic automated testing of your IP.
If you run an open relay and do not intend to secure it, don't bother asking to be removed from our list and/or excluded from testing. You won't get both and your request will likely be ignored.
If you run an open relay, do not intend to secure it, insist that we not test your system, and send us anything we consider to be threats or harassment, we may exclude your IP from testing, but it will be permanently added to our list.
If you have large IP blocks used for dynamic dial-up pools, dynamic or residential DSL or cable modem service, and do not want these blocks tested, please consider submitting those blocks to be added to our list of known "dial-up/dynamic IP ranges". Note: Such IPs are not normally tested unless they run mail servers or other software that talks directly to mail servers that use our list. For a clear explanation, see the "Automated testing" section of our methodology page.
 If you request exclusion for IPs we have never tested, we may test them once before excluding them. Exclusion is only intended to keep repeated failed relay attempts from showing up in the logs on servers that are not open relays.