The answer to your question is right in front of you!!!
Perhaps, your version of PHP does not have the mail function (imap) compiled in.
<? phpinfo(); ?>
to see what are modules are supported in your version of PHP.
Here is a sample of mine:
'--with-gd=shared,/usr' '--with-ttf' '--enable-gd-imgstrttf' '--with-png-dir=/usr'
'--with-jpeg-dir=/usr' '--enable-sysvsem=shared' '--enable-sysvshm=shared'
'--enable-shmop=shared' '--with-unixODBC=shared' '--with-mysql=shared,/usr' '--with-ldap=shared' '--with-imap=shared'
'--with-imap-ssl' '--with-pgsql=shared' '--with-gettext=shared'
If you do not have mail (imap) compiled in, you will need to recompile your php to include imap support.
Kai
