<![CDATA[SMTP rejected for some users]]>

<![CDATA[SMTP rejected for some users]]>For some of our users, their SMTP connections are being denied, with:

902 Host names have more than one DNS label

This error appears to come from https://codeclimate.com/github/msimerson/Haraka/plugins/helo.checks.js/source

I don't know how to walk them through finding out what HELO their device is sending to validate it, but it seems related to the plugin.cfg.reject.valid_hostname setting. Did this change in 5.0.3 ?

]]>https://forum.cloudron.io/topic/2235/smtp-rejected-for-some-usersRSS for NodeSat, 18 Jul 2026 20:52:32 GMTMon, 16 Mar 2020 23:10:44 GMT60<![CDATA[Reply to SMTP rejected for some users on Mon, 16 Mar 2020 23:18:03 GMT]]>This appears to be a case of https://forum.cloudron.io/post/6533 . Applying the linked setting change fixed the issue.

]]>https://forum.cloudron.io/post/6540https://forum.cloudron.io/post/6540Mon, 16 Mar 2020 23:18:03 GMT