|🛈 SYSTEM INFORMATION|
|OS type and version||Ubuntu Linux 20.04.3|
|Related packages||Fale2Ban 0.11.1|
I have just upgraded Ubuntu 18.04 LTS to 20.04 LTS and after having resolved most of the issues I am now stuck with fail2ban.
I did some research and found many people have had this issue in past but everyone took a different approach to either get it resolved or there has been no formal closure on few of the posts.
For example, I am facing this exact problem posted here in the link below but this post was closed without a resoolution.
Can someone pls let me know if how I can fix postfix-sasl issue? I am not sure how to use iptables or firewall? I am not been sure what I was using in the older version Ubuntu18.04 + Fail2Ban 0.10.2 but it was working perfectly fine and I could see rogue ips hitting my jail and getting blocked, which is not happening anymore.
I am happy to share content of my jail.local or fail2banl.conf file.
Not sure if I need to write up or make any changes/adjustments in filter.d and action.d folders/files as well. So can someone pls share the full details. We can probably use it as sticky for newbies who joins this community in the coming days.