we have configured in Zimbra a Relay-MTA (xx.xxx.26.201) and set the trusted networks (zimbraMtaMyNetworks) to the complete netadress (xx.xxx.xx.192/28).
zimbraReverseProxyLookupTarget - active
zimbraMtaDnsLookupsEnabled - active
reject_non_fqdn_sender - active
xx.xxx.xx.201 - Webmin Mailproxy
xx.xxx.xx.202 - Zimbra Mailserver
Now the problem. If we marked Mails as Spam, Zimbra make a copy to the spam.rcilbyxy5z Account. On one day we have ~400 Mails marked as Spammails.
But Autotrain themse not work, because the spam is to much. Some Words like ****** or XXX in the Header are 100% Spam and not for the inbox.
And i have testet it with some "daily" mails like "douglas-newsletter". I set ~300 of it as Spam and the mails don't auto move to spam.
Is the Proxy the problem, like all Mails from this Server a white listed without any check?
Is there any way to look into the spam database and the words in it?
thanks for help!