diff --git a/core/config/postfix.main.cf b/core/config/postfix.main.cf
index 71cf2bb..8e1cdcb 100644
--- a/core/config/postfix.main.cf
+++ b/core/config/postfix.main.cf
@@ -5,7 +5,7 @@
 # is /etc/mailname.
 #myorigin = /etc/mailname
 
-inet_protocols=ipv6
+inet_protocols=all
 
 smtpd_banner = $myhostname ESMTP $mail_name
 biff = no