diff --git a/nix-infra-machine/nodes/node001.nix b/nix-infra-machine/nodes/node001.nix
index ca5e7eb..380ce84 100644
--- a/nix-infra-machine/nodes/node001.nix
+++ b/nix-infra-machine/nodes/node001.nix
@@ -8,6 +8,7 @@
     465   # SMTP submissions (implicit TLS)
     587   # SMTP submission (STARTTLS)
     993   # IMAP (implicit TLS)
+    4190  # ManageSieve
     443   # HTTPS (webadmin)
     80    # HTTP (ACME)
   ];
@@ -114,6 +115,10 @@
             protocol = "imap";
             tls.implicit = true;
           };
+          managesieve = {
+            bind = "[::]:4190";
+            protocol = "managesieve";
+          };
           https = {
             bind = "[::]:443";
             protocol = "http";
diff --git a/sogo-mail/sogo-config-secret.yaml b/sogo-mail/sogo-config-secret.yaml
index 6607fb2..7c10221 100644
--- a/sogo-mail/sogo-config-secret.yaml
+++ b/sogo-mail/sogo-config-secret.yaml
@@ -38,6 +38,7 @@ spec:
               - mail
             displayName: "Shared Addresses"
             filter: "(objectClass=user)"
+        SOGoSieveServer: "sieve://stalwart.rubenhensen.nl:4190/?tls=YES&tlsVerifyMode=allowInsecureLocalhost"
         SOGoIMAPServer: "imaps://stalwart.rubenhensen.nl:993"
         SOGoMailingMechanism: "smtp"
         SOGoSMTPServer: "smtp://stalwart.rubenhensen.nl:587/?tls=YES&tlsVerifyMode=allowInsecureLocalhost"