No one can reply without knowing the precise steps with which you are
entering this address and what version of Outlook you are using.

Signature
Russ Valentine
[MVP-Outlook]
>I entered an email adress wrongly, and even though I have now deleted it
>from
> my contacts, I cannot enter it correctly (even with reply button!) without
> outlook automatically changing back to the the wrong way I entered it
> originally.