Unpack the checkpassword package:
gunzip checkpassword-0.90.tar tar -xf checkpassword-0.90.tar cd checkpassword-0.90
Compile the checkpassword program:
As root, install /bin/checkpassword:
make setup checkFinally, send me the portability notes created by the compilation process:
( echo 'First M. Last'; cat `cat SYSDEPS` ) \ | mail email@example.comReplace First M. Last with your name.
Simulate a failed POP login:
# /var/qmail/bin/qmail-popup blah /bin/checkpassword pwd +OK <...@blah> user Frodo +OK pass Friend -ERR authorization failed
Simulate a successful POP login, using a correct account name and password instead of Frodo and Friend. You should see the account's home directory.
Simulate a successful POP login again, with id instead of pwd. You should see the account's uid and gid.