The security solutions on the mail system make a line that you need to cross, but it doesn’t guarantee a success. It’s a hard way to guess how good is the impl

The security solutions on the mail system make a line that you need to cross, but it doesn’t guarantee a success. It’s a hard way to guess how good is the implementation on the receiver, like GMX, Libero or other big country providers with “historical” service that don’t care about them too much.