I've run into this with t-online.de as well. I set up an operations web page just so they'd allow email from my MTA.
On Friday, August 1, 2025 4:43:54 AM CDT Tassilo Philipp wrote: > One of my favorites from the last years was t-online.de (german > telekom): mail from my server/IP was blocked by default, b/c I didn't > have a website (!) under the same domain that provides some basic > service provider info. Yes, a website is one of their requirements (4.1): > https://postmaster.t-online.de/index.en.html#t4.1 > > They refer to an EU law, for justification, however the latter doesn't > explicitly say website, and a whois is basically already more than > enough. > > On Thu, Jul 31, 2025 at 04:39:39PM +0000, INGHAM III, KENNETH wrote: > > All the big email require proper SPF, DMARC and DKIM in most cases. See, > > for example, Email Authentication Changes: What Microsoft and Google Are > > Enforcing (and What It Means for You) - Baskerville Drummond Consulting > > LLP<https://baskervilledrummond.com/email_authentication_changes_what_mic > > rosoft_and_google_are_enforcing/> > > > > SPF is trivial to set up. Some will argue with me, but DMARC and DKIM are > > a pain to set up. However, they (combined with SPF) are our best hope > > for reducing forged email. > > > > Kenneth > > > > From: Stuart D Gathman <[email protected]> > > Sent: Thursday, July 31, 2025 7:11 AM > > To: Peter N. M. Hansteen <[email protected]> > > Cc: [email protected] > > Subject: Re: [vaguely OT] Looking for verified war stories of BIG MAIL > > disappearing valid mail > > > > On Thu, 31 Jul 2025, Peter N. M. Hansteen wrote: > This message is the > > start of an effort to research just how the BIG MAIL > operators treat > > SMTP mail from small outfits like nxdomain. no and friends. Related > > problem - 90% of the spam ZjQcmQRYFpfptBannerStart > > This Message Is From an Untrusted Sender > > You have not previously corresponded with this sender. > > > > Report Suspicious > > <https://us-phishalarm-ewt.proofpoint.com/EWT/v1/KGOTntw!SYrP0N8Vo9FRT > > 1R1MHSlfUPCUBakO1-HIDTCC5cqHkiJhp-JceSXKkU-_1gJMTaK1oYi3C5EBOgod5d2EiO8 > > yjxEXt2ldumdkkDf$> > > > ZjQcmQRYFpfptBannerEnd > > > > On Thu, 31 Jul 2025, Peter N. M. Hansteen wrote: > >> This message is the start of an effort to research just how the BIG MAIL > >> > >> operators treat SMTP mail from small outfits like nxdomain.no and > >> friends. > > > > Related problem - 90% of the spam on my email server is from gmail. > > > > I need to make them whitelist only. But need a system where senders > > > > get a response telling them how to request whitelisting. > > > > > > > > > > > > These complementary problems are both the result of massive > > > > centralization. My "baby-step" advice to non-tech email users: "get > > > > your own domain". Even if you continue to use gmail or a smaller > > > > provider (registrars generally offer reasonable personal email), > > > > having your own domain means you can switch providers - letting > > > > capitalism do its thing. There is no such thing as "free" email. > > > > You are paying for it one way or another. > > > >> We have seen GOOG and to a lesser extent MSFT, YHOO mail exchangers seem > >> to > >> > >> accept messages from our domains for delivery, only to have them not turn > >> > >> up in the intended inboxes after all or at best land in the users spam > >> folders. > >> > >> > >> > >> I am pondering starting a campaign to collect war stories with as much > >> log data > >> > >> and other relevant data as possible in order to write an article which > >> may > >> > >> evolve to something else. > > > > Microsoft often disappears emails from me to hotmail. What kind of > > > > documentation do you need?
