This error arises because the name of its computer, as all the computers have, owns invalid characters.
In order to see the name of its computer
Home >> Ejecutar >> cmd and to enter.
Soon in that black screen, to write hostname? without quotation marks and to give him to enter.
There aparecera the name of your computer, if this in invalid target or characters must change
In order to correct it, on the writing-desk right button PC and they corrigan the name.
It verifies in the configuration of his outlook or e-mail program if e-mail appears to verify security when sending, in the lapel servers, changes the configuration that it has at the moment.