[otrs] Ignoring out-of-office autoreplies

I'd like to avoid autoreplies from customers (out of office etc.) to re-open my tickets, or change the state from Pending-customer to Open. Found these references: https://otrsteam.ideascale.com/a/dtd/Out-of-office-auto-replies/114882-10369 http://blog.otrs.org/2010/10/22/dont-let-out-of-office-emails-change-your-ti... Has anyone implemented a solution like this? I'm of course looking for something that survives upgrades and doesn't require too much fiddling. Thanks, Sander