diff --git a/crates/common/src/config/smtp/resolver.rs b/crates/common/src/config/smtp/resolver.rs
index 20c8fa71..27b33e11 100644
--- a/crates/common/src/config/smtp/resolver.rs
+++ b/crates/common/src/config/smtp/resolver.rs
@@ -109,10 +109,6 @@ 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",