Hi guys,

Version: fail2ban 0.10.2-2.1

Just upgraded Debian from 9 to 10. iptables still runs.

Did fail2ban started trying to add strange strings into iptables? However the 41.113.60.220 IP was removed from iptables and running fail2ban-client reload gave clean results.

2019-09-04 18:36:48,231 fail2ban.action [1429]: INFO HINT on 127: "Command not found". Make sure that all commands in 'iptables -w -D INPUT -p tcp -m multiport --dports smtp,submission -j f2b-postfix\niptables -w -F f2b-postfix\niptables -w -X f2b-postfix' are in the PATH of fail2ban-server process (grep -a PATH= /proc/`pidof -x fail2ban-server`/environ). You may want to start "fail2ban-server -f" separately, initiate it with "fail2ban-client reload" in another shell session and observe if additional informative error messages appear in the terminals. 2019-09-04 18:36:48,231 fail2ban.actions [1429]: ERROR Failed to execute unban jail 'postfix-auth' action 'iptables-multiport' info '{'matches': 'Sep 4 02:53:01 mail05 postfix/smtpd[18353]: lost connection after AUTH from unknown[41.113.60.220]Sep 4 02:53:02 mail05 postfix/smtpd[18353]: lost connection after AUTH from unknown[41.113.60.220]', 'failures': 2, 'ip': '41.113.60.220', 'time': 1567621575.106415}': Error stopping action

Anything I ought to check?

Best, Sophie


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