> Trying to send mail to ARSystem (SunOS 5.5.1) and getting the    
     > error message "ARSystem .. user unknown". ARSystem is well       
     > defined in /etc/passwd. ARSystem can send email to other users.
     A big thanks to Claus Assman (he/she also had the right solution) 
     and all others who responded. Below is Claus's response.
     
     Don't use uppercase letters...: man 5 passwd:
     username       is the user's login name.   This  field  con-
     tains  no  uppercase characters, and must not be more than eight 
     characters in length.
     
     If you really need it, set the flag 'u' in 
     Mlocal,..F=..u..
     ^
     in sendmail.cf
     
     u   Upper case should be preserved in user  names  for
     this mailer.
     
     
     Thanks again,
     Michael
     
     
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:11:55 CDT