Fix: Exim mail bounce back – retry time not reached
Sometimes, usually when you have been affected by spammer attack and your exim queue was full of the bad emails, you might have troubles sending […]
Continue reading »Category: Security
How to manage firewall on Centos7/8 with firewall-cmd
Centos7 is a great server OS. There are bunch of other sites, which describe how to manage firewall rules, here I am just gathering those, […]
Continue reading »
How to protect your project against phishing – sysadmin tips
Hello guys, Today I am going to list and give brief explanation about how you can protect your project against phishing. This article is designed […]
Continue reading »
Debug your website as Google-bot from shell
Google and other search engines implement their own lists of hacked and vulnerable pages. That is fantastic, but might be nightmare for administrators to debug […]
Continue reading »
Redirect to HTTPS with .htaccess
Put the following text in your .htaccess file and change it to match your domain. RewriteEngine On RewriteCond %{SERVER_PORT} 80 RewriteRule ^(.*)$ https://blog.hosting.guru/$1 [R=301,L] RewriteCond […]
Continue reading »
How to scan for new disks on VPS without reboot
VPS has become a new standard in Hosting world. They have become stable, fast and scalable. Here is a small tip for those, who would […]
Continue reading »
Force linux server reset commands, when reboot does not work
Rare, but happens, that servers hang. And even more rare that they don’t respond on reboot commands. And what if you are out hiking with […]
Continue reading »
[FIXED] WordPress administrator not allowed to update or install plugins
This is just a tip, as this is not a bug, but a feature. So if you are WordPress admin user, but you miss some […]
Continue reading »
Find injected PHP code
When hackers and spammers decide they want to abuse your website and misuse it for their own benefit and they succeed on it – they […]
Continue reading »Protect WordPress from password hijackers and login abusers
For a long time WordPress login script has been a target on our servers. Hackers are constantly trying to login into WordPress with random usernames […]
Continue reading »