Config with postfixadmin

[morbificagent]

Hi there,

i am using postfixadmin with virtual mailboxes and was using this howto to deploy it:

https://www.linuxbabe.com/mail-server/postfixadmin-create-virtual-mailboxes-ubuntu-20-04

so my /etc/aliases file isnt used if i understood it correctly.

As i think thats my problem i cant enter the php-call in it.
And postfixadmin says that i cant use

"|/usr/bin/php -f /var/www/nextcloud/apps/files_frommail/lib/NextcloudMailCatcher.php"

in its alias-config because its not a mail adress...

Any suggestions?