Spam Resource: Does Gmail use Spamhaus? Or any other blocklists?

Al Iverson just released a brilliant story on Spam Resource:

This is a question I get a lot. Does Gmail use any blocklists? Or, somebody will tell me that they’re having Gmail issues, and they’ve plugged their own IP address into an online blocklist lookup tool, and they are sure that any results found (blocklisting issues) must somehow be part of the underlying cause of their deliverability woes. Except, that’s just about never the case. Here’s why.There are a zillion blocklists out there. Speaking specifically just about DNSBLs (IP-based blocking lists), there’s a good 90+ of them. But blocklists are a bit like blogs,  in that anybody can publish them and the fact that it’s been published doesn’t mean that anybody is guaranteed to be actually looking at the what has been published. The net here is that there are a lot of blocklists that, if your IP or domain ends up listed by them, this does not mean that

More here: Does Gmail use Spamhaus? Or any other blocklists?