• The new Python extension is now available. It allows customers to deploy and manage WSGI-based Python applications on their websites directly from Plesk.
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Issue Native Plesk mailbox forwarding of externally received messages to local mailboxes is rejected by the local Plesk DMARC

emilzawislaktsl

New Pleskian
Server operating system version
CentOS 7
Plesk version and microupdate number
18.0.79
Plesk Obsidian 18.0.79 on CentOS 7.

Native Plesk mailbox forwarding of externally received messages from
[email protected] to local mailboxes is rejected by the local
Plesk DMARC milter after SRS rewriting.

The original incoming message passes SPF and DMARC and is delivered to
[email protected].

Forwarded copies are reinjected from 127.0.0.1 with an SRS envelope sender.
The Plesk DMARC handler reports:

spfres=pass
dkimres=pass
align_spf=fail
align_dkim=fail
p=REJECT
dmarccheck=DMARC_POLICY_REJECT
dmarcstatus=STOP

Postfix then reports:
milter-reject: END-OF-MESSAGE from localhost[127.0.0.1]:
5.7.1 Command rejected

mail_dmarc_reject_at_smtp=true is already enabled and
plesk repair mail -y has been completed.
 
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