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--- setup_basic_mailserver_with_postfix_dovecot_sieve [02.01.2020 08:23] – [proxmox mail gateway] Pascal Suter
+++ setup_basic_mailserver_with_postfix_dovecot_sieve [02.01.2020 11:56] – [future improvements] Pascal Suter
@@ Line 467: / Line 467: @@
   * for DKIM to work you need to add a TXT entry to your domian's DNS record. you can click on "View DNS Record" to get a copy-paste snippet to paste right into your bind zone file if you're using bind as your name-server.
   * once all these settings where done, i had to login to the filter via ssh and **manually restart postfix**. otherwise postfix would bind port 25 to 127.0.0.1 only. i guess rebooting the entire filter would fix this issue as well.
+==== future improvements ====
+=== Bayesian learning by moving mail to junk folder ===
+in order for proxmox's Bayesian filter to learn and start working you need to provide spam and ham mails. to do this, one needs to copy spam that passed the filter to a temporary location on the proxmox mail gateway and then tell the Bayesian filter that this is spam. it needs at least 200 spam and ham mails to start working. ideally, we should be able to do this by simply moving an email to the spam folder on our imap account and the email should then be submitted to the bayesian filter of PMG automatically..
+some information i will need to do this:
+  * the command on PMG to submit a ham or spam to the learning system is <code>sa-learn --spam filename</code>
+  * a solution on how to use imap sieve filters to trigger a bash script when a mail is moved into a specific folder can be found in the [[https://workaround.org/ispmail/buster/filtering-out-spam-with-rspamd-2/|all mighty ISPmail tutorial]]
 ==== adjustments to postfix settings on our mailserver ====