Hi I've been receiving emails from Apple which look legit but don't make any sense. They say "The following Apple Push Notification Service certificates, created for AppleID [my ID] will expire on May 18, 2017. You can renew your certificates with your Mac server administration tools"
What is this? I don't have a Mac. I have a PC and Laptop with Windows and an iPhone. I do have an iCloud account - is that what they are referring to - and does this message mean anything I need to attend to?
Many thanks in advance!
Read more: What is an Apple Push Notification service?