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Change Netfilter Ban Settings

To change the Netfilter settings in general please navigate to: Configuration -> Configuration & Details -> Configuration -> Fail2ban parameters.

You should now see a familar interface:

Netfilter ban settings

Here you can set several options regarding the bans itself. For example the max. Ban time or the max. attempts before a ban is executed.

Change Netfilter Regex


The following area requires at least basic regex knowledge.
If you are not sure what you are doing there, we can only advise you not to attempt a reconfiguration.

In addition to the ban settings, you can also define what exactly should be used from the mailcow container logs to ban a possible attacker.

To do this, you must first expand the regex field, which will look something like this:

Netfilter Regex

There you can now create various new filter rules.


As updates progress, it is possible that new Netfilter regex rules will be added or removed.
If this is the case, it is recommended to reset the Netfilter regex rules by clicking on Reset to default.

Last update: 2022-05-05 21:41:23