Hi D4NY,
I recommend the following DNSBL 's:
cbl.abuseat.org;sbl.spamhaus.org;xbl.spamhaus.org
and we are interested to apply SPF spam protection.
If you want tons of examples, investigations, explanations, suggestions, pls. use as well the
Plesk forum search with the example - search - keywords:
=> https://talk.plesk.com/search/search?&keywords=SPF+DNS+DKIM+DMARC
In addition, you should consider to use IMAP instead of POP3 for mail - accounts with
common account-names ( "info" / "webmaster" / "office" / "admin" / ... ) and be sure
to move SPAM into your SPAM - folders, so that spamassassin has the chance "to learn" within the daily maintenance task. Don't forget to configure the "learn" - options in your "
local.cf" from spamassassin.
It is as well a great help to use additional rule - sets from for example "
updates.spamassassin.org", "
spamassassin.heinlein-support.de", "
sought.rules.yerp.org", "
sa.zmi.at", and other preferred rule - sets
( I'm pretty sure, that you will find rule - sets with italien definitions with Google... ) ( updated regulary with cronjobs ). Examples how to setup these cronjobs can be read here:
=> #4
Consider as well to configure your postfix configuration - files with unique settings... pls. read the
detailed postfix - documentation (
=> http://www.postfix.org/postconf.5.html ) to learn, which settings might help you to fight against spam.