compile error

[Kristina]

When I compile qmail-1.03 on Solaris 7 the following error is produced throu
ghout
the compile for all *.c files.  In the end, qmail compiles okay so I am wond
ering if
the following is something I should be worried about?

qmail-local.c:448: warning: return type of `main' is not `int'

Thanks for any help,
Kristina