On Sun, Nov 04, 2018 at 12:53:34PM -0500, Bill Cole wrote: > > I'm uneasy about adding a de facto DNS caching change in 3.4.3. (And > generally about apps caching name lookups, but that's a larger > discussion...)
It's not really caching. Just skipping lookups that are already done, just one way to achieve it. There's no need to do the same callbacks potential dozens of time like in some messages. > Are we absolutely sure that the pms object isn't EVER going to be reused for > another message? e.g. in tools like MIMEDefang that spawn long-running > workers to handle multiple messages? Umm yes. Otherwise nothing would work, as it's the state data for pretty much all internals and plugins.
