Issue Emails that are sent locally inside the server are rejected – PPPM-7190 not fixed with 18.0.79

[King555]

Server operating system version

Ubuntu 24.04.4 LTS

Plesk version and microupdate number

Plesk Obsidian 18.0.79 Update #2 Web Admin Edition

I had the problem that all local mails were moved to the spam folder (e.g. mails from Watchdog, fail2ban, Plesk PUM, etc.). I did the workaround which was described here by creating a file called /etc/psa/dmarc.conf:

https://support.plesk.com/hc/en-us/articles/12377454166935-Emails-that-are-sent-locally-inside-the-server-are-rejected-with-DMARC-REJECT-message-or-DMARC-message-moved-to-QUARANTINE

Meanwhile the workaround is not there anymore, because the article says that this bug has been fixed. So I deleted the file. But on my server it's even worse than before. While the mails were moved to the spam folder before, they are now completely deleted/rejected. This happened immediately after deleting the file which was created as the workaround.

The log entry is: 938A51B407C0: DMARC: smtpdomain=example.com maildomain=example.com [email protected] stamp=1784165641 ip=unknown adkim=relaxed aspf=relaxed p=REJECT sp=UNSPECIFIED pct=100 align_dkim=fail align_spf=fail spfres=unknown dkimres=unknown dmarccheck=DMARC_POLICY_REJECT dmarcstatus=STOP