diff --git a/roles/smtprelay/templates/main.cf.j2 b/roles/smtprelay/templates/main.cf.j2
index e8b485f..6d64dd1 100644
--- a/roles/smtprelay/templates/main.cf.j2
+++ b/roles/smtprelay/templates/main.cf.j2
@@ -27,7 +27,7 @@ smtp_use_tls = yes
 relayhost = [{{ smtprelay_host }}]:{{ smtprelay_port }}
 
 ## only accepts local relay
-mynetworks = 127.0.0.0/8, 172.17.0.1/16
+mynetworks = 127.0.0.0/8
 inet_interfaces = loopback-only
 
 smtpd_relay_restrictions = permit_mynetworks,defer_unauth_destination,reject