On 28.07.2019 09:42, Brian Kantor wrote:
As I said, time will fix that - it's a question of when the old address expires out of DNS caches and the new one is learned.
DNS should be updated by now. Have you set reverse DNS accordingly?
That's likely ok by now, since the DNS TTL was an hour. But until the email reputation of the new address builds, it's still quite possible that messages will be marked as spam by some overzealous anti-spam algorithms.
This is not the case. I run this mail server. It simply checks if HELO information is valid.