Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Marco Moock <mm+usenet-es@dorfdsl.de>
Newsgroups: comp.mail.sendmail
Subject: Re: Sendmail on FreeBSD 14, gmail problem
Date: Tue, 16 Apr 2024 08:54:14 +0200
Organization: A noiseless patient Spider
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Message-ID: <uvl7an$qcb5$2@dont-email.me>
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On 15.04.2024 um 16:45 Uhr bp@www.zefox.net wrote:

> (reason: 550-5.7.26 This mail has been blocked because the sender is
> unauthenticated.)

As a low volume sender, you need at least SPF or DKIM (you can do both)
for your domain.
SPF is a simple DNS TXT record, DKIM also need a milter (e.g. opendkim)
that signs the message.

Setting that up is easy, ask if you have questions.

-- 
kind regards
Marco

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