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-rw-r--r--nixos/modules/services/mail/dovecot.nix3
1 files changed, 3 insertions, 0 deletions
diff --git a/nixos/modules/services/mail/dovecot.nix b/nixos/modules/services/mail/dovecot.nix
index f239dda564a2..e79d5dadd828 100644
--- a/nixos/modules/services/mail/dovecot.nix
+++ b/nixos/modules/services/mail/dovecot.nix
@@ -271,6 +271,9 @@ in
       { assertion = cfg.showPAMFailure -> cfg.enablePAM;
         message = "dovecot is configured with showPAMFailure while enablePAM is disabled";
       }
+      { assertion = (cfg.sieveScripts != {}) -> ((cfg.mailUser != null) && (cfg.mailGroup != null));
+        message = "dovecot requires mailUser and mailGroup to be set when sieveScripts is set";
+      }
     ];
 
   };