Hi Florian,
> I am an amavis/spamassassin user thinking about transitioning to rspamd
> (colleagues would love to have a GUI ;)). Is it possible to quarantine spam
> mails to a specified spam mailbox instead of rejecting them? Also in amavis
> it is possible to configure if spam emails are rejected or discarded (this
> would be important if rspamd is not the front-end mta).
I suppose you are looking at using rmilter (possible answers to these
questions are mostly dependent on integration/particulars of your
setup)- in such case you could set `spamd_never_reject = true;` to
disable rejection:
https://rspamd.com/rmilter/configuration.html
(`reject` action could be removed or rescored in rspamd's metric).
Discarding mail could be done by Sieve or similar.
Haraka or Exim could be options and are highly configurable. Likely
Postfix is somewhat configurable too but I don't know much about it/it
looks harder.
Best,
-AL.