For some reason, this code didn't exist in two different Marketo instances prior to August 2019. Since that time, we've received thousands. Complicating the issue is a bounce management campaign, calling for all contacts with 3 soft bounces in 90 days to be marked email invalid. As a result of this ooo classification, we've been inadvertently marking contacts Email Invalid for 9 months.
Very surprised that this is the only post about this issue, since that bounce management campaign was built from a popular community post - literally everyone who implemented it would have this issue. Granted, I've only looked in two instances but they are wholly unrelated - and have the same exact circumstances.
If you're reading this.. see how many Email Bounce Soft Details contains auto-reply/vacation results you get for before August 1, 2019. Then look for after.
Am I missing a data retention cutoff that removes those bounces? I've got countless other bounce codes from before August 1, 2019 so I really don't think that's it.
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