Issue After installing the Plesk Email Security extension, it cannot perform local deliveries

[HoracioS]

Server operating system version

Ubuntu 22.04 LTS aarch64

Plesk version and microupdate number

18.0.55 #2

Hello, after installing the extension, issues with local delivery start occurring within a few hours:

-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
DEFBDBB3BB 4915 Mon Oct 2 22:41:52 [email protected]
(host 127.0.0.1[127.0.0.1] said: 421 4.3.2 Service shutting down, closing channel (in reply to end of DATA command))
[email protected]

None of the workarounds are effective. The only thing I could do is uninstall the Plesk Email Security extension, force the delivery of emails, and then reinstall it, but WITHOUT Clamav. Is this a bug, or is there an error somewhere? The server has 4GB Ubuntu 22.04 ARM.

Best regards,
Horacio

 

[Peter Debik]

What workarounds are you referring to?
Are you using greylisting?

 

[HoracioS]

I'm referring to the workarounds regarding AMAVIS; the problem clearly lies between AMAVIS, CLAMAV (which I had to deactivate), and the 4GB of memory that is not sufficient. I don't use greylisting.
Plesk for ARM servers is not very reliable yet. Additionally, many WordPress plugins do not work when installed in the Hetzner Nuremberg data center, but they do function in Falkenstein or Helsinki.

 

[Peter Debik]

I am not sure how the data center can affect a Wordpress installation. Maybe this is beyond my imagination. May I suggest that for this case you please contact the Plesk support team? They can discuss the issue in detail with you and also - with your permission - could access your server to fix an issue directly on the server. https://support.plesk.com