In the past it was nessecarry to add the postgrey manual to the postfix config file. Where can I enable it in controlpanel?
It is possible to use whitelisting of postgrey in ispconfig? because I can't recive email from hotmail.it, but if I insert hotmail.it in /etc/postgrey/whitelist_clients doesn't work, even if I insert in /etc/default/postgrey POSTGREY_OPTS="--inet=10023 --whitelist-clients=/etc/postgrey/whitelist_clients"
Normally it should work like you did it, did you restart postgrey and postfix? Maybe you should stop postgrey and then check with ps if there are no processes left before you start it again.
Yes, and to be sure I've reboot the server... and still don't work... I forget to say I'm using ubuntu 16.04 server installed with this automated script: https://www.howtoforge.com/tutorial/ispconfig-automated-install-script/ every other thing it's working, now only one email client is with the greylist checkbox checked for my test, any other and any alias is not checked anymore