I have Linux Enterprise 4. using dovecot & sendmail . my some client on outlook dont got their emails /var/log/messages shows following erorr. type password is correct. Previously I copy my passwd & shadow file from another linux machine. and then create manual user of (dovecot) dovecot(pam_unix): check pass; user unknown Aug 13 16:52:09 hblpk dovecot(pam_unix): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= Please help us.