Server Side Filter

Hi List

Hi list

I can not find any combination of

serversidefilter-1.42.tar
server_side_filters-2.0beta1-1.4.0.tar
server_settings_backend-1.0-1.4.0.tar
server_settings_backend-2.0-1.4.0.tar
compatibility-2.0.16-1.0.tar

Which does not give "PHP Fatal error".

On the machine I have installed
CentOS Linux release 7.9.2009,
Qmailtoaster, http://www.qmailtoaster.net/#centos7
with
squirrelmail.noarch 1.4.23-1.el7.20190710
and
maildrop-devel.x86_64 2.9.1-2.qt.el7.

What do I need to install to get SquirrelMail Server Side Filtering that 
works with Qmailtoaster and maildrop?

Thanks in advance, for any advice that can binge me further.

Regards,
Allan


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