I know this isn’t a specific postfix question but I’m hoping to get some good advice from others who have been in this spot before.
I just got noticed that my IP address of 14 years is being revoked in less then 2 weeks. I can imagine the work I need to do but I’m wondering what I’m not thinking about. I think my best course of action is to as quickly as possible start to publish alternative IPs for mail delivery. I have DMARC and DKIM set-up and I’m currently use strict for the evaluation. I think I should also set-up some MX records for my new IP. Is there anything else I can do to help my reputation as a mail server? My fear is that as soon as google, yahooo, hotmail, … see mail from my domain on a new ip they will start to reject my mail. Is that a valid fear? What should I be worried about doing. Thanks, Ben