Can't find libdb-4.1.so while running Courier Imap
 

hi all

i have already installed 'Courier Imap server' on linux. Now i want run imap server . I am trying to run usr/lib/courier-imap/libexec/imapd.rc start

But i am getting this error shown in red

/usr/lib/courier-imap/libexec/couriertcpd: error while loading shared libraries: libdb-4.1.so: cannot open shared object file: No such file or directory

Can any body tell me what exactly i have to do so the executable will pick the lib files correctly