I set up my iPad to send and receive email through my business address (I use 1and1.com for webhosting). My iPhone email was set up by a buddy who is an IT guy so I copied everything exactly as is on my iPhone. I've rechecked everything and all the settings are identical to those on my iPhone.
My iPad is receiving email fine but outgoing email is stuck in my outbox. It says the email addresses are rejected by the server. The addresses are correct.
Is there something else I have to do so email gets sent out.