

Yes, I migrated IP (from one provided to another) last year, and I recently added a new domain as well.
The new domain on the new ip just works, and the old domain on the same new ip just keep working.
Both the old and new ip are not residential IPs, I rent a small dedicated server for this purpose on the major hoster of my country. I pay about 15€/month for that, but it’s not only used for email, for all my services.


To be honest it’s mostly FUD. Self host email is perfectly doable provided that:
What happened to me over the years was having the subnet my ip was is being associated to spammers, and that was a problem. It took several iterations with blacklists and my provider to get it sorted. That’s why I recommend using a reputable service provider that take care of spammers in a timely manner.