Posible Bug in 10.4.4? Getting blocked after changing something is mail settings.

[DarkoS]

Hi!

I have dedicated server with Plesk 10.4.4. Did not had any problems till now.
Few days ago, I had to change some mail password, and after pushing Save button, I tried to update the same setting on my phone. In the matter of minutes, I was totaly blocked from accesing the server - all my request to reach the server were time-out. I could not even ping my server. At first I tought that the server is down, but after that I checked from my phone and I saw that the server is up.
After 30 min, it seems that the block was turned off and I could see the server again.
But today I had to add another mail address, and the exactly same thing happened.
I assume that my IP is getting blocked but I dont know why and how to prevent it?

Any ideas?

 

[InderS]

Hello,

Yes, Your server is blocking your ISP IP in the server firewall and due to that you are facing this issues. Can you please let me know which firewall you have installed on your server

 

[DarkoS]

Hi.

Thanks for the answer.

It seems that I have instaled CSF as I see it in /etc/init_d/

 

[InderS]

Okay, Check your ISP IP in csf firewall through following command

csf -g IP

OR

grep IP /var/log/lfd.log

 

[DarkoS]

Hi.

From csf -g IP command I got: No matches found for IP in ip6tables

From grep IP /var/log/lfd.log: Incoming IP XXX.XXX.XXX.XXX temporary block removed

XXX.XXX.XXX.XXX is my IP.

Thanks for all the help

 

[InderS]

Hi.

From csf -g IP command I got: No matches found for IP in ip6tables

Above output showing your IP is not currently block in server firewall

From grep IP /var/log/lfd.log: Incoming IP XXX.XXX.XXX.XXX temporary block removed

XXX.XXX.XXX.XXX is my IP.

Thanks for all the help

And grep command showing the IP block history on your server