Date: Mon, 1 Mar 2021 09:48:36 -0600 From: Valeri Galtsev <galtsev@kicp.uchicago.edu> To: Matthew Seaman <matthew@FreeBSD.org>, Tim Daneliuk <tundra@tundraware.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Totally OT comment: Re: Somewhat OT: Mail Relay Services Message-ID: <2edd9853-3af7-c0b8-7118-329d8af346be@kicp.uchicago.edu> In-Reply-To: <3dac8dd5-7751-1823-3cfc-45172cd77b64@FreeBSD.org> References: <877d08ef-d533-69f6-4c44-f2cbbe39ba31@tundraware.com> <3926E240-2226-4E94-96E2-10A877B139D0@kicp.uchicago.edu> <3dac8dd5-7751-1823-3cfc-45172cd77b64@FreeBSD.org>
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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. Valeri 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 > damage. > > 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.) > > Cheers, > > Matthew > > On 28/02/2021 18:29, Valeri Galtsev wrote: >> >> >>> On Feb 28, 2021, at 12:01 PM, Tim Daneliuk <tundra@tundraware.com> >>> wrote: >>> >>> 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 >>> periodic >>> 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 >>> services. >>> 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 >>> resolution. >> >> 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. >> >> Valeri >> >>> 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? >>> _______________________________________________ >>> freebsd-questions@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-questions >>> To unsubscribe, send any mail to >>> "freebsd-questions-unsubscribe@freebsd.org" >> >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to >> "freebsd-questions-unsubscribe@freebsd.org" >> -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++
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