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    Question Close incoming port 110 and 143

    Can I close ports 110 and 143 without problems or block them by the firewall (incoming) if I only use the secure ports (993, 995)?
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    Question WAF Modsecurity

    I have a lot of websites on the server running with Ngnix only (php with nginx). Modsecurity rules are set to Nginx (ModSecurity 3.0) with custom ruleset of Comodo. All is working fine. My question is now what are happens with some websites they are running with apache and nginx as proxy (php...
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    Question Unauthorized access to psa / admin folder

    Hello everyone, While looking through the logs I noticed that an unknown IP address tried to access the folder usr / local / psa / admin / htdocs. The log shows: 2021/03/07 19:39:39 [error] 1542#0: *303 open() "/usr/local/psa/admin/htdocs/Autodiscover/Autodiscover.xml" failed (2: No such file...
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    Issue SMTP port 587 with SSL not working

    Hey to all. I figured out that sending mails via SMTP port 587 with SSL is not working. On port 587 only STARTTLS works on clients like thunderbird or mail programs on smartphones... On port 465 SSL is working fine for all clients. I use latest version of Plesk and postfix for smtp server. How...
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    Resolved Plesk POP3 Server via Cloudflare not reachable

    I have the following problem. I use a domain with various email addresses. Everything works fine. Email client (Outlook) is set up in such a way that messages are queried via pop3 in encrypted form. As I said, everything works fine. Now the domain is passed through Coudflare because the traffic...
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    Issue Unable to generate the web server configuration file

    Today i run the plesk repair kit and got this error, all the websites are down: Unable to generate the web server configuration file on the host <xxxxx. Xxxxx> because of the following errors: Template_Exception: AH00526: Syntax error on line 360 of /etc/httpd/conf/httpd.conf: Unknown keyword...
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    Resolved How to install x-sendfile and x-accel

    How to install x-sendfile and x-accel? I couldn't find any tutorials. Do i need both x-sendfile and x-accel or which one? I use apache with nginx as reverse proxy and latest version of Obsidian and Centos 7.
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    Question Roundcube update

    When will the new Roundcube security update be implemented? 1.4.4 has already been released.
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    Issue Hotlink protection and Expire headers doesn't work together

    I tried to add hotlink protection to my domains. This also works as far as the expires headers no longer work or vice versa. Is this a bug or am I doing something wrong? I don't use WordPress sites. Can someone help me there? I use latest Obsidian version, CentOS 7.7 and Nginx.
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    Question Ram usage 98% after 24 hours

    Hello everyone. Since the update from onyx to obsidian, the RAM usage is constantly full and SWAP is being used. Onyx's RAM utilization was just 24% and the server ran for days without problems. Nothing was changed to the domains or settings in Plesk. Does anyone have an idea why the RAM is full...
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