Help with email and relaying

Why am I getting this message every time I try to send an email from my iphone from my hosted address?

[quote]Cannot Send Mail
A copy has been placed in your Outbox. The recipient “” was rejected by the server because it does not allow relaying.[/quote]

I’m sure I’ve done something stupid, thanks for your help!

K. Steinke

You need to set up authentication for outbound mail. Go into Settings and add your username and password to the settings for the outgoing mail server. The username should be in the form

Thank You!!