From 4c946968e1be2f478cfe22e23cc5b38f4aa36e1d Mon Sep 17 00:00:00 2001
From: Gonne <gonne@mathebau.de>
Date: Tue, 4 Mar 2025 07:39:36 +0100
Subject: [PATCH] Hack around sieve execution for multiple recipients.

---
 nixos/modules/mail.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nixos/modules/mail.nix b/nixos/modules/mail.nix
index 24d144c..88bc59e 100644
--- a/nixos/modules/mail.nix
+++ b/nixos/modules/mail.nix
@@ -184,6 +184,10 @@ in {
                 }
                 {"else" = false;}
               ];
+              # The sieve script only handles the last RCPT TO command (https://stalw.art/docs/sieve/variables).
+              # Since we want it to run for every recipient, we need to accept them one at a time. :-(
+              # This setting throws a temporary error for the second RCPT TO command after which the HRZ retries in a new connection.
+              max-recipients = 1;
             };
             data.script = "'redirects'";
           };