You should not hijack a thread when the topic has little to do with your question and is in wrong forum. Also, you are hiding your question within...
Does your server have public IP address routable in the Internet? Or have you setup forwarding or proxy to the server behind NAT? Is port 25 open...
Not much. More information needed. Start with this: https://forum.howtoforge.com/threads/please-read-before-posting.58408/ What command line...
I found this https://forum.howtoforge.com/threads/multiple-php-version-and-composer-with-jailkit.78716/#post-400571 using Internet Search engines...
On ISPConfig 3 system installed with ISPConfig autoinstaller, the /etc/jailkit/jk_init.ini already contains sections for all installed PHP version...
Try Internet Search Engines with site:howtoforge.com change host IP You could add name and version of your Linux distribution to the search query,...
It may be dovecot.conf does not help here. If your computer runs out of memory, you can add swap file or swap partition install more RAM memory...
My signature has link to Fail2ban tutorial, if you want to pursue setting it up to suit your needs. But like @till wrote, on Debian 12 Fail2ban...
You should not hijack threads not related to your question. You can remove your question now that it has been resolved on the new thread you created.
Which tutorial? Did the tutorial instruct to use that argument? Even if the autoinstaller has an argument, it is may not be good to use it in all...
Is this the first server of that Multiserver Setup? Or did you succesfully install the other servers already? Are you following these...
Try removing the desktop environment and Gnome packages. Hard part is finding names of packages. Try for example dpkg --list | grep -i gnome and...
Write regex test online to a Search Engine and use those tools to debug the regex.
Use tools to test regular expression, there are websites that offer such tools. Search Engines can find them. My signature has link to Fail2ban...
If you are in a hurry to get server back working, consider paying for business support to do the job. https://www.ispconfig.org/support/
Separate names with a comma.
