one user is using the Function "Always Cc Myself" on his iPhone
and iPad with Build 428. Now on each Email he sends he receives
a warning saying "<Username> not a valid Email adress".

This is because (as described over here:
http://wiki.novell.com/index.php/IPhone_4.X) the User should not add his
(For your email, enter your name (an "@" isn't necessary) )
to the Email Field.

It seems to work even if he writes his complete Emailadress
but I don't know if this leads to any problems?

cu SveN