diff --git a/roles/base/files/postfix/main.cf/main.cf.bastion01.iad2.fedoraproject.org b/roles/base/files/postfix/main.cf/main.cf.bastion01.iad2.fedoraproject.org
index 6562f3faa7..3be9548a90 100644
--- a/roles/base/files/postfix/main.cf/main.cf.bastion01.iad2.fedoraproject.org
+++ b/roles/base/files/postfix/main.cf/main.cf.bastion01.iad2.fedoraproject.org
@@ -144,6 +144,8 @@ inet_interfaces = all
 # Enable IPv4, and IPv6 if supported
 #inet_protocols = all
 inet_protocols = ipv4
+smtp_address_preference = ipv4
+
 
 # The proxy_interfaces parameter specifies the network interface
 # addresses that this mail system receives mail on by way of a
diff --git a/roles/base/files/postfix/main.cf/main.cf.iad2 b/roles/base/files/postfix/main.cf/main.cf.iad2
index 7fb1af560d..86120c904c 100644
--- a/roles/base/files/postfix/main.cf/main.cf.iad2
+++ b/roles/base/files/postfix/main.cf/main.cf.iad2
@@ -111,7 +111,9 @@ myorigin = fedoraproject.org
 #inet_interfaces = all
 #inet_interfaces = $myhostname
 #inet_interfaces = $myhostname, localhost
-inet_interfaces = all
+inet_interfaces = ipv4
+smtp_address_preference = ipv4
+
 
 # The proxy_interfaces parameter specifies the network interface
 # addresses that this mail system receives mail on by way of a