On Tue, Jan 06, 2015 at 10:53:42AM +0100, Thomas Leuxner wrote: > # postconf -n | grep inet > inet_interfaces = 188.138.4.217, 2001:470:1f0b:bd0::3 > inet_protocols = ipv4, ipv6
Do this instead: main.cf: ipv4_interfaces = 188.138.4.217 ipv6_interfaces = 2001:470:1f0b:bd0::3 inet_interfaces = $ipv4_interfaces, $ipv6_interfaces inet_protocols = ipv4, ipv6 master.cf: smtp-ipv6 unix - - - - - smtp -o smtp_header_checks=pcre:$config_directory/header_checks_smtp_out -o inet_protocols=ipv6 -o inet_interfaces=$ipv6_interfaces smtp-ipv4 unix - - - - - smtp -o smtp_header_checks=pcre:$config_directory/header_checks_smtp_out -o inet_protocols=ipv4 -o inet_interfaces=$ipv4_interfaces -- Viktor.