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15 June 2023 Updated 15 June 2023
Setting kernel parameter rp_filter=1 also prevents fail2ban from blocking legitimate IP addresses.
18 October 2019 Updated 18 October 2019
The method described requires you can be root, meaning it is not universal but may be sufficient if you are the system administrator.
28 June 2019 Updated 31 August 2019
Use the docker0 bridge IP address to connect to Postfix
13 February 2019 Updated 31 August 2019
ISPConfig is a great hosting control panel but it does not support Python applications out of the box. This post shows how you can do it using Docker.