I am getting this log frequently on my router and I don't know what is the cause.
%FW-5-POP3_INVALID_COMMAND: Invalid POP3 command from initiator (192.168.10.174:59556): Invalid verb
the IP is the IP range of internal clients and I have this message from many different clients. I was wondering if the thunderbird is the cause but it is not.
anybody knows what is the cause of this request and log.