Plesk 10.4.4 Upgrade Email Trash Automatically Emptying After 30 Days

[Justin Clarke]

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Plesk, 10.4.4 (Update #4), CentOS Linux 2.6.18-028stab092.1

I am currently on 10.4.4 but I think this may have been happening in 10.3.1 as well. When I check my email Trash folder (over IMAP) I can see that items older than 30 days are automatically getting permanently deleted. This is not good as I was looking for some old deleted emails in there the other day and they are gone!

ACTUAL RESULT - Emails are being permanently deleted from my Trash folder if the Received Date is older than 30 days.

EXPECTED RESULT - No emails should be deleted from my Trash folder unless I manually delete them from there.

ANY ADDITIONAL INFORMATION:
Horde webmail is installed but I don't use that so I don't think it's a setting on there that is doing it.

I use the Thunderbird email client but this is set to "Don't delete any messages", so it's not the client so I think it is something on the server.
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Anything I can check?

Thanks.