diff --git a/exim4/exim4.conf b/exim4/exim4.conf
index 79a8d16..0f946ae 100644
--- a/exim4/exim4.conf
+++ b/exim4/exim4.conf
@@ -33,7 +33,7 @@ ACL_SMTP_DATA = acl_check_data
 
 #--CONFIGURATION
 
-hostlist relay_from_hosts = 127.0.0.1
+hostlist relay_from_hosts = 127.0.0.1 : ::1
 
 CHECK_RCPT_VERIFY_SENDER = 1
 keep_environment =