fix: smtp config tweaks

.env.template

@@ -22,6 +22,7 @@ MOBILIZON_SMTP_PORT=25
 MOBILIZON_SMTP_USERNAME=noreply@mobilizon.lan
 MOBILIZON_SMTP_PASSWORD=password
 MOBILIZON_SMTP_SSL=false
+MOBILIZON_SMTP_NO_MX_LOOKUP=false
 
 # When using docker for development, VITE_HOST must be set to 0.0.0.0
 VITE_HOST=localhost

config/config.exs

@@ -129,6 +129,32 @@ config :mobilizon, Mobilizon.Web.Email.Mailer,
   # can be `true`
   no_mx_lookups: false
 
+
+config :mobilizon, Mobilizon.Web.Email.Mailer,
+  adapter: Swoosh.Adapters.SMTP,
+  level: :info,
+  relay: System.get_env("MOBILIZON_SMTP_SERVER", "localhost"),
+  port: System.get_env("MOBILIZON_SMTP_PORT", "25"),
+  username: System.get_env("MOBILIZON_SMTP_USERNAME", nil),
+  password: System.get_env("MOBILIZON_SMTP_PASSWORD", nil),
+  no_mx_lookups: System.get_env("MOBILIZON_SMTP_NO_MX_LOOKUP", false),
+  auth: System.get_env("MOBILIZON_SMTP_AUTH", "if_available")
+  tls: System.get_env("MOBILIZON_SMTP_TLS", "if_available"),
+  tls_options:
+    :tls_certificate_check.options(System.get_env("MOBILIZON_SMTP_SERVER", "localhost")),
+  ssl: System.get_env("MOBILIZON_SMTP_SSL", "false"),
+  sockopts: [
+    versions: [:"tlsv1.2", :"tlsv1.3"],
+    verify: :verify_peer,
+    cacerts: :public_key.cacerts_get(),
+    depth: 4,
+    customize_hostname_check: [
+      match_fun: :public_key.pkix_verify_hostname_match_fun(:https)
+    ],
+  ],
+  retries: 1,
+
+
 config :vite_phx,
   release_app: :mobilizon,
   # to tell prod and dev env appart