[Exim] Trouble Building Exim

Hi Folks,

I have just finnished installing Exim but it will not run. It says

Error while loading shared libaries: libdb-3.1.so: can not open shared object
file

I am on RedHat7.2 and have installed the db3-devel package as the manual
suggests.

I know that I do not have libdb-3.1.so but I do have libdb-3.2.so (in /lib
and various other libarie files in /lib and /usr/lib including the db1 and
db2 sets).

Can anyone tell me which file I have to edit to include the lib's I have, I
am new to linux and flying by the seat of my pants :-)

Any help greatly appreciated,

cheers
Mike