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Re: [OT] Requesting feedback for VPS/Cloud for email (MX) server?



On Fri, Jul 31, 2020 at 08:00:32AM -0400, Henning Follmann wrote:
> On Fri, Jul 31, 2020 at 12:59:06PM +0530, Didar Hossain wrote:
> > Hi,
> > 
> > I want to host my own email on the cloud - I don't want to use G Suite or any
> > other commercial service because I would like to have control over my email.
> > 
> > I read around a little and it seems that most cloud providers block SMTP ports
> > (25,587,465) from/t the internet as well sometimes from within their network.
> > This poses a real problem for my deployment plans. Also, note that my design has
> > separate MSA (submission), Mailstore (IMAP) and MTA (MX) nodes.
> > 
> > I have shortlisted Digital Ocean and Linode for my use because both of
> > datacenters in India. Is anyone using either of them for MX service?
> > 
> > Any and all feedback is most welcome including specialist/small VPS providers
> > who I can consider to host the MX node for my domain at least.
> > 
> 
> I think all ISP should be fine. I sometime feel for a mailserver it is
> more important to have a decent DNS provider than where you actually
> run your mailserver. Because as a minimum you want to set up
> SPF and DKIM.
> Most ISP require to register an outgoing mail server with them. This
> is also important that they set up a reverse ptr for your host.

Cheap US$5 cloud instances are super attractive propositions for spammers who
have absolutely abused these providers and made it difficult for legitimate
senders to host on them.

I have DNS, SPF, DKIM and DMARC under control. But, IP/ASN reputation is
something that I have to factor in because a lot of my counter party receivers
are on Office365 and G Suite who would block ill reputed networks.

> One note on Digital Ocean. In my experience there is a lot of spam
> originating from Digital Ocean. This potentially could cause you
> some trouble. But this might be just my personal "feeling". I never
> ran the numbers on ISP spam submission rates.

True, I remember seeing some statistics about spam originating from them and
that is why they have recently started blocking ports 25 throughout.

> I currently use AWS for my mailservers. In the past I used
> A1flexus for dedicated servers. They are on Long Island
> and were very "linux friendly" at that time.

Does your AWS instance receive and send over port 25?

Kind regards,
Didar

-- 
Sun in the night, everyone is together,
Ascending into the heavens, life is forever.
		-- Brand X, "Moroccan Roll/Sun in the Night"


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