Where in the world?

North America.

I've been using Hetzner for my own personal email server. They have pretty good prices and good servers. The only thing is that they have a policy where port 25 and 465 are blocked until you reach certain requirments heres what their FAQ says "We want to build trust with our new customers before we unblock these mail ports. Once you have been with us for a month and paid your first invoice, you can create a limit request to unblock these ports for a valid use case. In your request, you can tell us details about your use case. We make decisions on a case-by-case basis."

The upside of this is that the IP's they give out are clean.

below is an image of their dedicated server prices for their North American Oregon location. 

I hope this helps. 

Thanks, 

We use OVH Dedicated Physical Servers, with ProxMox installed and managed by us.

The amount of spam and attack we deflect deflect from Hetzner IPs makes it hard to believe what they give out is guaranteed to be a clean IP.  Just in the last 48 hours we firewalled over 100 of their IPs because of continued spam.  It comes in waves, for sure, but still.

That said - there is no perfect host.  NONE.

We're on AWS and have very few issues - none that affect our SM hosting.  The only issue with AWS is you have to petition to get your outbound port 25 opened.  We got ours because our mail servers had been online for over a decade on other hosts prior to moving to them and don't appear on blocklists - that was our only leverage on that.

I'd be interested to hear if there are any good Managed solutions. Our current provider has been ok, but they charge through the nose for Storage which limits how much space we can give to clients, thus limiting clients we can take on without shelling out $$.

I use Linux VMs on Azure. You can purchase three year reservations of the servers which dramatically reduces the cost. I am very happy that SM is now .net core and runs on Linux. I’ve found the performance is better, the hosting is cheaper, and the OS management (at least for me personally) is better. I do still have to contact other providers to get blocks cleared.