I have this problem at one company at the moment. We use gmail with spf and dkim, and have a low mail count and no mass marketing that I'm aware of. We're on two blacklists. One gives zero reason for being on it, and has a 'contact us for reevaluation' form which I've submitted. No feedback, no change, no idea what to do next.
The other blacklist suggests that it's our commercial site that's hosted with a provider who uses linode, and the linode CIDR block our company website is on has been 'banned with no recourse to remove' due to the huge amounts of spam it has sent. For that list, it apparently doesn't matter that our mail comes from google, not linode. When I get some free time, I'll try to move that website.
I've had some success contacting postmasters of smaller orginizations and explaining to them why blacklist $x really wasn't a good one and offering some alternatives, but this method is a bit tedious and prone to failure
I just set up Postfix to use an SMTP relay and then send them through a provider specializes in transactional emails (even though the emails I send through them are all hand written).
RFC-Clueless ('abuse' and 'postmaster'). Reading over their site http://rfc-clueless.org/ again I see that there is the information to the policies for listing, but I just didn't happen to follow the correct series of links to get there.
It's really not very clear with that site, and ironic that a list apparently named after people who aren't compliant with docs has such poor presentation of information. The documentation is clear... eventually, if you pick the right path. I'll take this on the chin as my misreading, but unclear documentation isn't helpful (particularly if you're juggling a few other fires at the same time...)
Edit 2: I forgot I removed the line where I mentioned that I thought postmaster was baked in :)
Edit 3: It looks like the domain I'm using with gmail has a screwed up abuse and postmaster. It's a domain alias, one of two. I made new mail groups for abuse/postmaster (the goog still monitors them, re: the link above) and noticed that only one domain alias was covered by them, when all other mail groups listed both. Sending test mails confirmed that setup. After a lengthy goog support chat, it seems that the way to fix it may be to remove and re-add the faulty domain alias.
I both love and hate these long chains of cause-and-effect that we get in IT...
The other blacklist suggests that it's our commercial site that's hosted with a provider who uses linode, and the linode CIDR block our company website is on has been 'banned with no recourse to remove' due to the huge amounts of spam it has sent. For that list, it apparently doesn't matter that our mail comes from google, not linode. When I get some free time, I'll try to move that website.
What do you do when the vigilantes screw you?