I rebooted my SBS2008 server over the weekend and today I notice that my DHCP server has a red minus sign in a circle when I try and access it from the MMC. Via netsh I can view information about ...

Locate the Mail app icon in the multitask bar. Tap and hold the icon until the red minus sign appears. Tap the red minus. The Mail icon will vanish. You have now completely quit the Mail app.

Open the Contacts app on your iPhone. Find and tap the contact that is turning red in messages. Tap the Edit option. Tap the red minus icon on the left of the email address to remove it.

To move its position, tap and hold the hamburger icon to the right of the Music Recognition option and drag it up or down. To remove it, tap the red minus (-) icon and tap Remove.