Am 15.10.2017 um 15:29 schrieb Jozef Matický: > Hello Andreas, > > Had some users complaining about mailboxes (and catch-alls) they created were > not accepting e-mails - Postfix, due to caching, was rejecting the e-mail as > if the mailbox wouldn't exist (apparently due to a fact someone was trying to > send an e-mail to that mailbox before it even existed - maybe spammer, maybe > a legit user).
That's a use case we where also faced years ago. We solved it by documentation. Also we "train" our users: whatever you configure, wait an hour! (No matter if it' really required or not) Then we consequently arrange our systems so every change is visible within one hour: address_verify_negative_refresh_time = 30m in this case. Simple but understandable for our users Andreas
