dandadude For instance, how can I make relaying possible through Enhance from a fixed IP address without authentication (like M365 provides)? This all has to be customized without knowing best practices and risking problems in the future?
Currently there is no persist way to do this however it will be possible from version 11.0.0
which releases in the next few weeks.
How can I create advanced filters for an e-mail address (not in webmail)?
There is no way (yet) to do this through the panel. You could create a custom sieve file but this would be a manual process. It is a very popular feature request and will be possible in the future.
How can I add a global (not local) blacklist and whitelist from address?
Currently this isn't supported in the panel but you can (from version 11.0.0
) do this by editing the rspamd config.
How can I check statistics of a given page under a website? Can I use awstats?
Enhance provides traffic statistics in the panel - hits, uniques, bots and bandwidth. These stats are more useful for tracking server load than actual visitors due to the popularity of caching proxies such as Cloudflare. For more advanced stats I would suggest Google Analytics.