I’ve been on Linode now for a couple of weeks. In that time I now have had two issues with my IP address considered to be dirty. I was on Vultr for 2 years and this was never an issue. I had issues with other things, but not email delivery.
My most recent one is an encounter with a company called Proofpoint: Cybersecurity Solutions, Services & Training | Proofpoint
I don’t know if they are legit or not, but they prevented an email delivery because of the IP address I am on.
So, any suggestions over who might be a better more reliable host?
Linode are on 2 strikes at the moment, but I don’t really want to pack up and move again.
Is it just the SMTP server address that is the issue here?
Thanks in advance for any clues.