I am wondering how mass email bounce management works when a recipient has an Automatic Reply set up while they are out of the office. When sending a mass email, I typically receive a few out of office responses but the last mass email I sent I received some automatic replies that came from the Bounce Forwarder. I looked at a report of bounced emails and didn't see any from this mass email. Why would I get notified about some automatic replies via the Bounce Forwarder and not others? And how do I confirm that the recipients ultimately received the email? Thank you!