I use Postwhite to create a whitelist for Postscreen based on user-configurable "trusted" mailers:
https://github.com/stevejenkins/postwhite (disclaimer: I'm the author). Yahoo! has always been problematic (no surprise) because unlike all the other big mailers that Postwhite queries, they don't expose the IP addresses of their outbound mailers via their SPF records. Today I added a separate script to the Postwhite project that scrapes this page from Yahoo!'s KB: https://help.yahoo.com/kb/SLN23997.html I don't know how often Yahoo updates that page, but it does change sometimes -- so it appears *somebody* there remembers to bump it every now and then. However, Yahoo!'s list doesn't include any IPv6 mailers, and I have to believe they have some in use. So two questions: 1) Anyone got any more elegant ideas for how to look up Yahoo! outbound mailers when building a whitelist for Postscreen? 2) Anyone got any ideas for how to find their IPv6 outbound mailers? Thanks in advance, SteveJ
