From d49a373102b0abb2b90135e5038adb55853f8061 Mon Sep 17 00:00:00 2001
From: Lach <iam@lach.pw>
Date: Wed, 5 Mar 2025 10:16:43 +0100
Subject: [PATCH] fix: enable edns0 for system resolver by default (#1282)

Remove after hickory-resolver is updated with this fix applied: https://github.com/hickory-dns/hickory-dns/pull/2831

Fixes: https://github.com/stalwartlabs/mail-server/issues/1255
---
 crates/common/src/config/smtp/resolver.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crates/common/src/config/smtp/resolver.rs b/crates/common/src/config/smtp/resolver.rs
index 27b33e11..20c8fa71 100644
--- a/crates/common/src/config/smtp/resolver.rs
+++ b/crates/common/src/config/smtp/resolver.rs
@@ -109,6 +109,10 @@ impl Resolvers {
             "quad9-tls" => (ResolverConfig::quad9_tls(), ResolverOpts::default()),
             "google" => (ResolverConfig::google(), ResolverOpts::default()),
             "system" => read_system_conf()
+                .map(|(conf, mut opts)| {
+                    opts.edns0 = true;
+                    (conf, opts)
+                })
                 .map_err(|err| {
                     config.new_build_error(
                         "resolver.type",