I have had issues with it over the years. Many will blacklist entire cidr nets for a single bad actor. I get this on my linodes frequently if I proxy traffic through them. Ie: tons of captchas on google/YouTube.

When I ran my own mail it was similar. Often having to spend time getting IPs off rbls and the like because some other node on my subnet was malicious.

In the end, I just moved my email over to workspace. Not ideal. But it works.

One thing I did notice was that as soon as I registered my domain in workspace (but hadn’t even setup mx records or began moving mail) a lot of issues with google immediately stopped, and thus, same with Office.com. I actually ran this way for a while but then google axed freed accounts and I just moved my stuff to them and pay.

Maybe because I use a gTLD? I dunno. But it was a headache.