Hello 18.219.229.1 from United States (Latitude: 39.9625 Longitude: -83.0061),

If you are trying to send Emails to this domain,
this is how to avoid rejection:

Use a reputable Email service that:
- employs free software¹;
- is configured to Internet standards, including SPF, DKIM and DMARC;
- has encryption and authentication configured;
- uses reputable IP ranges;
- is whitelisted by dnswl.org; and
- that will not provide/sell/leak² your information to anyone else without your consent.
Send text Emails from addresses that will accept replies.
Do not attach files to your Emails, send links to secure storage instead.
Ensure you don't include any information in an unencrypted
Email that you don't want to share with the general public.
Seek professional technical support to get the systems you use to send Emails
configured correctly, and to sign and encrypt your Emails with valid GPG keys.
Do not use phishing phrases, spam trigger words, out-of-context wording, etc..
Naturally, you must not use AI to generate Email.
If you have a website with the same domain as the Email address you are using,
ensure the domain gets high reputation scores, e.g., from postmaster.google.com.
Ensure any parts of your Email address are never, ever used to send unsolicited or bulk Emails, or to spread malware.
Do not use Email forwarding/routing services.
Check your Email score, e.g., by using mail-tester.

If you followed the points above and
your Email is still getting rejected,
please remember, sending is in your responsibility³.

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[1] Is a device truly secure if you have no idea what it is doing?
[2] In mainy cases this means you will have to use a paid-for Email service.
[3] According to RFC5321 chapter 2.1, "The responsibility of an SMTP client is to transfer mail messages to one or more SMTP servers, or report its failure to do so.", confirmed by the Bundesgerichtshof.

Impressum

The Internet ends here.