Assuming there are no issues on your web server configuration and the remote server is online, you may want to check if the SSL Certificate associated with the external entity is valid.
You sent an email, and it was bounced (returned) back to you.
Check the error log file for errors. Coding errors on your website are most likely causing the blank pages.
Use the following settings to read and send email messages in mail clients, like Microsoft Outlook and Apple Mail.
If you can use the control panel to manage your service, connect via SSH or VNC, most likely, it is not a DDoS attack.
One of our customers sent us a message similar to the following.
The File Manager is enabled by default in cPanel. You need to login into the cPanel account first before you can use it.
It shouldn't be an issue on your end, nor of your website, because Google stops showing ads after a few impressions to the same person.
Yes, pornographic content is allowed on our servers.