"ideally shouldn't happen" doesn't mean the deliverability cartel doesn't block you anyway.
Gmail et al have been spam filtering messages from correctly configured mail servers for a decade+ now. All the dkim, dmarc, and spf in the world won't help you if you aren't known to them.
Sure, that's almost certainly true, but the arbitrariness of changes and blacklisting leads one to consider perhaps they don't care at all about small hosting operations.
Gmail et al have been spam filtering messages from correctly configured mail servers for a decade+ now. All the dkim, dmarc, and spf in the world won't help you if you aren't known to them.