Search:

I said I added postfix, wrong, that was already part of 20.04 - Mike

Hi All:

I hope this is not a duplicate post, I made a mistake earlier a couple days ago.

I have been using Ubuntu 20.04 Server a couple years now, very happy with it. Web server still works...

All: huge reduction in traffic by following directions: https://visei.com/2020/05/incremental-banning-with-fail2ban/
- Mike

jedi123 said "You know this would be easy if you just added an 'iptables" rule to your router ."
Mike says: Thank You, excellent idea. I will probably look at accomplishing that.
Makes me wonder...

I can't seem to figure how to mark this problem solved so I am adding a reply that says [Solved] - Mike

I think I found a solution even though I really don't know what I am doing.
Reading
https://www.linux-magazine.com/Online/Features/Intrusion-Detection-with-fail2ban
I edited ...

Hi and thanks in advance for your help.

How do I configure fail2ban v 0.9.0 to jail specific IPs based on strings for example these strings/IPs:

----- Invalid user admin from 185.117.215.9...

[Solution #2?] Seems to work
https://scottlinux.com/2016/02/14/how-to-relay-mail-from-twc-home-connections/ was easy to do and outgoing email seems to be working just fine now. - Mike

Thank You SeijiSensei.

That was excellent information. I tracked down the error message to the exact error about my IP being listed on PBL (Policy Block List) and the message includes a paragraph...

Hi All:

What works:
1) incoming e-mail using ubuntu server postfix works.
2) outgoing e-mail using ubuntu server postfix when sent to yahoo.com


What is broken:
1) outgoing e-mail from my...

Solved, thank you! See second post above. I finally did follow your directions and I pressed the "Thread Tools" button and marked this thread as solved. Thanks! - Mike

Solution

Edit the file /etc/systemd/logind.conf

Find the lines similar to below and change them to match this, leave the other lines in the file alone:

HandleSuspendKey=ignore...

Hi LHammonds, THANK YOU LHammonds!!!

Excellent results so far, not finished.

Action: Create-copy files: logind.conf-Original-From-Apache and grub-Original-From-Apache Results: I have...

Newbie to Ubuntu, old timer linux user. I want to close the laptop lid and have the display turn off on this Ubuntu Server 20.04 and have it keep/stay running.

I'm creating a web and e-mail server...