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fight spam

Gerneral discussion and questions about KeyHelp
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tom83
Beiträge: 60
Registriert: Do 22. Aug 2019, 21:33

fight spam

Beitrag von tom83 »

Hi,
Client are receiving too much spam emails. We already changed to 0 the spam filter. Any tips to do it?
Thanks
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george
Beiträge: 69
Registriert: Fr 3. Jan 2020, 05:53
Wohnort: AUSTRALIA

Re: fight spam

Beitrag von george »

Hi Tom,
If you are serious about blocking spam, take a good look at Fail2ban.
It is already installed on KeyHelp, and setup with some basic features to cover common usage. It is encouraged to make your own custom rules for fail2ban, to suit your purposes.
Fail2ban is very strong on blocking spam, especially with a little additional configuration. Searching this forum for "fail2ban" will yield plenty of good results, on how to add these configurations.
More configuration options are available too, with Postfix, Spamassassin, and Amavis, but as a novice I would focus on Fail2ban for now...
nikko
Beiträge: 868
Registriert: Fr 15. Apr 2016, 16:11

Re: fight spam

Beitrag von nikko »

You can add blacklist server in KH. Also you can login into round cube and put the rule > if mail marked as ***SPAM*** > move it to trash or spam.
Zuletzt geändert von nikko am Do 13. Aug 2020, 19:56, insgesamt 1-mal geändert.
The software said: Requires Win Vista®, 7®, 8® or better. And so I installed Linux.
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george
Beiträge: 69
Registriert: Fr 3. Jan 2020, 05:53
Wohnort: AUSTRALIA

Re: fight spam

Beitrag von george »

Of course, that is much easier... if not already done.
tom83
Beiträge: 60
Registriert: Do 22. Aug 2019, 21:33

Re: fight spam

Beitrag von tom83 »

How to add blacklist in KH?
Also how to use Fail2ban for that? Any tutorial or example to block spammers using fail2ban?

Thanks.
tom83
Beiträge: 60
Registriert: Do 22. Aug 2019, 21:33

Re: fight spam

Beitrag von tom83 »

Another question. What should I put in " DNS-based blacklists (DNSBL) "?
This is the place to put a *domain to block or a list of known blacklists?
How can I get those blacklists? Is necessary to subscribe to anything?
Would this be a list to use: https://en.wikipedia.org/wiki/Compariso ... blacklists ?
What are the most commom lists to put there?
Sorry, I'm new at KH. Thanks.
Jolinar
Community Moderator
Beiträge: 1691
Registriert: Sa 30. Jan 2016, 07:11
Wohnort: Weimar (Thüringen)
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Re: fight spam

Beitrag von Jolinar »

tom83 hat geschrieben:
Fr 28. Aug 2020, 19:24
how to use Fail2ban for that? Any tutorial or example to block spammers using fail2ban?
https://www.google.com/search?q=how+to+use+Fail2ban

tom83 hat geschrieben:
Fr 28. Aug 2020, 19:44
Sorry, I'm new at KH. Thanks.
Blacklists are not a feature of keyhelp but of postfix. Please read the postfix manual, this is basic knowledge for an admin.
Wenn jemand inkompetent ist, dann kann er nicht wissen, daß er inkompetent ist. (David Dunning)
___
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george
Beiträge: 69
Registriert: Fr 3. Jan 2020, 05:53
Wohnort: AUSTRALIA

Re: fight spam

Beitrag von george »

See the post on "How to Blacklist or Whitelist in SPAMASSASSIN"
viewtopic.php?f=11&t=9945

Hope this helps...
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