Date: Mon, 10 Nov 2008 13:15:53 -0800 (PST) From: Mark Busby <redtick@sbcglobal.net> To: help help <freebsd-questions@freebsd.org> Subject: open mail relay with ipv6?? Message-ID: <346469.37304.qm@web81205.mail.mud.yahoo.com>
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Is this an open relay using ipv6? If so how to block the ipv6 relay. I thought after sendmail v8.9, all relay action was blocked by default. maillog entry Nov 10 15:01:11 "hostname" sm-mta[8989]: mAAL021C008989: from=<jjack@panama-overseas.com>, size=4825, class=0, nrcpts=0, bodytype=7BIT, proto=ESMTP, daemon=IPv6, relay=localhost [IPv6:::1] Nov 10 15:01:17 "hostname" sm-mta[8989]: mAAL021D008989: ruleset=check_mail, arg1=<security@bank0famerica.com>, relay=localhost [IPv6:::1], reject=451 4.1.8 Domain of sender address security@bank0famerica.com does not resolve Nov 10 15:01:17 "hostname" sm-mta[8989]: mAAL021D008989: from=<security@bank0famerica.com>, size=3880, class=0, nrcpts=0, bodytype=7BIT, proto=ESMTP, daemon=IPv6, relay=localhost [IPv6:::1] > sockstat -6 USER COMMAND PID FD PROTO LOCAL ADDRESS FOREIGN ADDRESS root sendmail 8284 5 tcp6 *:25 *:* root sshd 1520 3 tcp6 *:5960 *:* root ntpd 1010 5 udp6 *:123 *:* root ntpd 1010 9 udp6 fe80:6::1:123 *:* root ntpd 1010 10 udp6 ::1:123 *:* root syslogd 927 6 udp6 *:514 *:*
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