Totally OT comment: Re: Somewhat OT: Mail Relay Services
galtsev at kicp.uchicago.edu
Mon Mar 1 15:48:37 UTC 2021
On 3/1/21 9:30 AM, Matthew Seaman wrote:
> Having worked for an e-mail service provider in the past, I can state
> that it isn't GMail, Outlook or any of the other big cloud providers
> intentionally killing off personal e-mail servers.
No, they are not. It is not they, but their way of doing things does.
> Well, other than by
> competition: providing an easy-to-use mail service with little
> administrative burden.
Leaving people switching over to "big boys" along, I am considering
purely technical aspects of "small time" servers being thrown out of the
ability to reliably and consistently providing email services, - because
of the way bug boys do things.
> It's the continuing arms race between the Spam senders and the Spam
> filtering. Reputation scoring based on sender IP is one of the best
> tools in the box for filtering spam, but...
Yes, and your "BUT" is exactly why I called "barracuda" and friends a
brain dead approach. Do we still support mail forwarding? Do we still
consider email account owner entitled to receive all mail arriving for
his/her account? If both answers are yes, then your server quite likely
will be "barracuded".
Just my $0.02.
the spammers are continually
> developing ways to avoid it by distributing their output over whole
> network ranges, and by setting up throw-away spam sources on any and
> all hosting services they can blag their way into. That's why your VPC
> hosting your e-mail server will quite likely get shot down as collateral
> The best way to avoid this is to use an address range that you can be
> confident no one will be able to set up a spam source on. So, a
> dedicated e-mail relaying service would qualify. Or, if you can swing
> it, get yourself a fixed IP range and run an e-mail system out of your
> own premises. (Which is what I do.)
> On 28/02/2021 18:29, Valeri Galtsev wrote:
>>> On Feb 28, 2021, at 12:01 PM, Tim Daneliuk <tundra at tundraware.com>
>>> For many years, I've run a mail system built on FreeBSD for my own
>>> small business.
>>> It's been as flawless as any mail server ever can be, requiring only
>>> maintenance and updates.
>>> The primary server runs in a 3rd party cloud environment. We are
>>> starting to
>>> see parts of their network blacklisted by the various UCE blackholing
>>> Unfortunately, they don't just blackhole a single IP, but an entire
>>> subnet at
>>> a time, which catches us in the mix.
>>> The big mail hubs like outlook.com no longer have a mechanism for
>>> removing the block
>>> for a single ip and kick you back to your ISP or hosting provider for
>> Totally OT comment:
>> For quite some time already I have a feeling that big boys -
>> gmail/google; microsoft/outlook/office365/hotmail; yahoo… -
>> effectively jacked “small time” sysadmins out of providing email
>> service. Tim’s description shows one mechanism of it.
>>> So ... we are contemplating using a smart host to do all our outbound
>>> email for us
>>> via relays from our own mail servers. Presumably, such a smart host
>>> would be better
>>> equipped to deal with bad blacklisting and delivery issues.
>>> So ... does anyone have experience or recommendations as to who would
>>> be a good
>>> provider for a low volume, small business mail relay?
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Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
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