Images won't show in iPad mail app

Everytime I get an email message with regular jpeg images, they come up as blue squares with a question mark. I access my gmail in Safari and it shows a question mark. But those images are just fine when I open the email on my MacBook Pro.If images won't show in mail app, tap Settings > Mail,Contacts,Calendars, and turn "Load Remote Images" on. Then do a reset by holding the Sleep/Wake button and