[Exim] Need help with exim 4.2 upgrade

Hi,

I have just upgraded to exim 4.2 from 3.36.
When using 3.36 I had the following modifications to exim.conf:

# added two lines below to make sure exim checks if sender is a valid user!
sender_verify_hosts_callback = *
sender_verify_callback_domains = *

Transport:

phpmail:
driver = pipe
command = php -q process.php
current_directory = /home/mail/
home_directory = /home/mail/
user = nobody
group = nobody
return_output = true

Director:

all:
driver = smartuser
condition =
${lookup{$local_part@$domain}lsearch{/home/mail/user_list.txt}{true}{false}}
transport = zapmail


My question is how can I implement these modifications into exim 4.2?

Thanks

Michael