Get internal username from vpw->pw_name after all. It may contain domain which input username doesn't.
Get internal username from vpw->pw_name after all. It may contain domain
which input username doesn't.

LTD-Beget/dovecot,Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,damoxc/dovecot,damoxc/dovecot,LTD-Beget/dovecot