Useful links

https://mxtoolbox.com/ - A variety of tools, all about mail

https://www.msxfaq.de/ - A great IT Pro sharing knowledge

https://www.reddit.com/r/sysadmin/ - Sysadmin Forum

https://azure.microsoft.com/en-us/status/ - If Azure/Office 365 has problems, this site will help you

https://winscp.net/ - Awesome FTP & SFTP Client

https://haveibeenpwned.com/ - Check if the bad guys know your password (or some old one)

https://gpsearch.azurewebsites.net/ - Search for GPOs

https://www.serverhunter.com/ - Cheap private servers on the Cloud

https://github.com/ajnik - My GitHub