1 files changed, 1 insertions, 0 deletions

diff --git a/ymir.nix b/ymir.nix
index 3c7d8f70..eca08f40 100644
--- a/ymir.nix
+++ b/ymir.nix
@@ -530,6 +530,7 @@ in rec {
       mail_plugins = $mail_plugins quota
       mailbox_list_index = yes
       postmaster_address = postmaster@yggdrasil.li
+      recipient_delimiter = +
 
       service auth {
         unix_listener /var/lib/postfix/queue/private/dovecot-auth {