Postfix smtp hook not working

[Peter Moser]

Hi,

I am using a postfix hook to check every mail with a bash script.

I have this line in my master.cf

smtp inet n - y - - smtpd -o content_filter=myhook:dummy

My script is also called for outgoing emails, I want that the script is just called when I receive any email. How can I configure this?

I used this tutorial:
https://www.thecodingmachine.com/triggering-a-php-script-when-your-postfix-server-receives-a-mail/

Best regards
Peter