there are, as far as I can see, no tutorials for freshly installing the latest ispconfig using rspamd instead of amavis, they all involve installing amavisd-new. the instructions for switching to rspamd even says that ispconfig 3.1 must already be installed. so does this mean that even for a fresh clean install on a new server we should still be installing amavisd-new, completing the perfect server tutorial, and then installing rspamd? otherwise, how much of the 'install amavisd-new, spamassassin, and clamav' section can be left out?, and can all the stuff in https://www.howtoforge.com/replacing-amavisd-with-rspamd-in-ispconfig/ then be done prior to installing ispconfig?
Just install rspamd instead of amavisd-new if you want to use *only* rspamd. If I am not mistaken, then you'll also have to install redis as a dependency of rspamd. The ISPConfig installer should take care of the remaining configuration itself.
No, use rspamd instead of amavisd-new/spamassassin. You do not need to install amavisd-new and spamassassin. However, if you want virus scanning, you need a virus scanner supported by rspamd (https://rspamd.com/doc/modules/antivirus.html) As clamav is supported, you can stick to that. Otherwise follow the instructions in the linked article (except disabling amavis), then install ispconfig. It should recognize rspamd automatically and activate it. *Disclaimer* Untested
