From 5164ecdfdf70815177d5f4eb57454bd0132a085b Mon Sep 17 00:00:00 2001
From: Antoine Nguyen <tonio@ngyn.org>
Date: Wed, 31 Jan 2018 11:42:44 +0100
Subject: [PATCH] fix: do not save the domain if not necessary.

it will also avoid the trigger of two post_save signals for the domain,
which can lead to unexpected issues.

see #1380
---
 modoboa/relaydomains/forms.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/modoboa/relaydomains/forms.py b/modoboa/relaydomains/forms.py
index ca9316aac..52d9518f8 100644
--- a/modoboa/relaydomains/forms.py
+++ b/modoboa/relaydomains/forms.py
@@ -37,6 +37,7 @@ class RelayDomainFormGeneral(tr_forms.TransportForm):
         instance.pattern = domain.name
         instance.service = "relay"
         instance.save()
-        domain.transport = instance
-        domain.save(update_fields=["transport"])
+        if not domain.transport:
+            domain.transport = instance
+            domain.save(update_fields=["transport"])
         return instance