[Dovecot] login problem

[jasper]

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I use pam to login my users are stored as j.hendriks 
now i like to use 2 domains but with the same user and passw 
and the option that de mail is stored in a difrent directory

but i cant get rit of the @domain extention by Autentification 
made these canges. 

auth_process_size = 256
auth_cache_size = 5000
auth_cache_ttl = 3600
passdb pam {
     args = session=yes
     args = service name="*"
     args = cache_key=%n                      
     args = dovecot
     }

but keeps Autentificating me as j.hendriks at domain insted of j.hendriks

what am i doing wrong.

help please.

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