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<br>The configuration tool returns this:
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<br>The mail server for mail.example.com accepts mail for mailbox ‘postmaster@mail.example.com’.
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<br>It also passes everything else. No red flags.
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<br>I still get this when I try to send email:
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<br>“SMTP Error (451): Failed to add recipient “someone@email.com” (4.3.5 Server configuration problem).”
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<br>And any incoming email to the mailbox also does not get received.
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<br>I tried looking all over the internet, but found no solution to the problem.
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<br>Do you know what might be causing that?
<b>“Do I need to create something like mail.example.com?”</b> Yes. <br> <br><b>“Also once the installation is done, what DNS records should I add for the example.com domain so that email would work?”</b> <br> <br>If you’re using DigitalOcean’s <a href=“https://www.digitalocean.com/community/articles/how-to-set-up-a-host-name-with-digitalocean”>DNS Manager</a>, you would need to add the following <b>MX record:</b> <code>1 - mail.example.com.</code> (don’t forget the trailing dot).
Okay, so the droplet reboot fixed the 4.3.5 server configuration error, and sending mail works now. But I cannot receive any mail. Possible reasons?