I'm using the standard OTRS 2.3.4 how downloaded by the OTRS WEB site.
 
It say also
 
Software error:
No SASL mechanism found
 at C:/PROGRA~1/OTRS/OTRS/Kernel/cpan-lib/Authen/SASL.pm line 74
 
I cannot find SASL on the manual.
 
Does it exist a god book on OTRS?