checkapoppw - checks APOP password against the file ~/Maildir/.password

       This manual page was written by Gerrit Pape <pape@smarden.org>, for the Debian GNU/Linux system.

                                                                                                  checkapoppw(8)

       There are other tools that offer the same interface as checkapoppw

       Note that these tools do not follow the getopt interface.  Optional features are controlled  through  (1)
       the tool name and (2) environment variables.

checkapoppw  reads  descriptor 3 through end of file and then closes descriptor 3.  There must be at most
       512 bytes of data before end of file.

       The information supplied on descriptor 3 is a login name terminated by \0, a password terminated by \0, a
       timestamp terminated by \0, and possibly more data.  There are no other restrictions on the form  of  the
       login name, password, and timestamp.

       If  the password is unacceptable, checkapoppw exits 1.  If checkapoppw is misused, it may instead exit 2.
       If there is a temporary problem checking the password, checkapoppw exits 111.

       If the password is acceptable, checkapoppw runs prog.

       prog consists of one or more arguments.

~/Maildir/.password

       checkapoppw - checks APOP password against the file ~/Maildir/.password

       Before  invoking  prog,  checkapoppw sets up $USER, $HOME, $SHELL, its supplementary groups, its gid, its
       uid, and its working directory.

checkpw(8), qmail-popup(8), qmail-pop3d(8)

checkapoppwprog

checkapoppw checks the APOP password against the content of the file Maildir/.password (not encrypted) in
       the user's home directory corresponding to the login name.

       Maildir may be overidden through the environment variable $MAILDIR.