How to remove IP address on fail2ban IPtables under PLESK server

In this case, you got call/ticket that customer not able to send email.

Firstly, you will need to check their IP address by guide them to access this site :

myip.dk

Then after customer provide the IP address, you need to quick check by command this :

# iptables -nL |grep xxxxxx

Once you see the IP address on the IPtables list, then what you have to do is remove it from the IPtables list

1. Login to the Plesk

2. Under Server Management –> Tools and Setting

3. IP address Banning (Fail2Ban)

4. Search the IP address on “Search” field