Allow emails to be sent again, #2101 #2172

https://github.com/swoosh/swoosh/issues/478#issuecomment-642393707

lib/pleroma/emails/mailer.ex

@@ -35,6 +35,11 @@ def perform(:deliver_async, email, config), do: deliver(email, config)
   def deliver(email, config \\ [])
 
   def deliver(email, config) do
+    # temporary hackney fix until hackney max_connections bug is fixed
+    # https://git.pleroma.social/pleroma/pleroma/-/issues/2101
+    email =
+      Swoosh.Email.put_private(email, :hackney_options, ssl_options: [versions: [:"tlsv1.2"]])
+
     case enabled?() do
       true -> Swoosh.Mailer.deliver(email, parse_config(config))
       false -> {:error, :deliveries_disabled}