Port 25 is for email, 80 is for HTTP and 443 is for HTTPS. If you cannot access your web server or receive an error message when attempting to send outbound email, then you may be experiencing a Distributed Denial of Service (DDoS) attack.
It will seem like your website is experiencing an unusually high amount of traffic, and it could take quite some time for any requests to be fulfilled. If you notice that people are posting about your website or content on social media but you’re not getting emails about sales, for example, it’s possible your site …
The server will have an unusually high amount of traffic Lire la suite »
You might see an unusual number of failed login attempts, particularly if your website offers user registration. If someone is trying to gain access to your site via brute force—trying a series of common passwords in order to unlock an account—it’s possible you’ll get locked out of your own account
