diff --git a/rootfs/etc/confd/templates/master.cf.tmpl b/rootfs/etc/confd/templates/master.cf.tmpl
index 8b1ff36..69006e3 100644
--- a/rootfs/etc/confd/templates/master.cf.tmpl
+++ b/rootfs/etc/confd/templates/master.cf.tmpl
@@ -1,6 +1,8 @@
-{{getenv "MYDOMAIN"}}-out unix - - - - - smtp
-  -o smtp_helo_name={{getenv "MYHOSTNAME"}}
-  -o syslog_name=postfix/smtp-{{getenv "MYHOSTNAME"}}
+{{range $mailhost := split (getenv "MAILHOSTS") ","}}
+{{$mailhost}}-out unix -     -    -    -    -    smtp
+  -o smtp_helo_name={{$mailhost}}
+  -o syslog_name=postfix-{{$mailhost}}
+{{end}}
 
 submission  inet  n  - - - -  smtpd
   -o syslog_name=postfix/submission
diff --git a/rootfs/etc/confd/templates/sender-transport.tmpl b/rootfs/etc/confd/templates/sender-transport.tmpl
index c430201..4bad0ae 100644
--- a/rootfs/etc/confd/templates/sender-transport.tmpl
+++ b/rootfs/etc/confd/templates/sender-transport.tmpl
@@ -1 +1,3 @@
-@{{getenv "MYDOMAIN"}}  {{getenv "MYDOMAIN"}}-out
+{{range $mailhost := split (getenv "MAILHOSTS") ","}}
+@{{$mailhost}}  {{$mailhost}}-out
+{{end}}