Add duplicate detection when reading hosts.nix

zones/pvv.ntnu.no.nix

@@ -56,22 +56,7 @@ in
       "ns2.stack.it.ntnu.no."
     ];
 
-    "mail._domainkey".TXT = [
-      "v=DKIM1; h=sha256; k=rsa; "
-      "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsLAI4Fj8lGS1gQbumMCftoynu9G5LCOrs8G/EzbXysKuV5EtCCS3ioJVdt3Bbu5RoTZq0lv0KbIClzW7qPa3u0spt9skOQswkSOhzoraPIwPacEUBRMyc2NYSmnIPthKyb6BTAYB1qcKpRswrNzZ6zbsG8DFD8zEJsbpPGjYSxbluLm+FsQXiX21Biha+psCpDTAGcQODri+Fh5UChYi7MnT7UGd8rvNIYlVPAYPeU0xoUcRRZxHfxLNyOU6TrFQ3MhjSKq06p35y3nN2z/6hjbkxQ8aKc30GB+y2SPrTE8TAXKmIMlWbmhaReFHhOS25XGWfzNVhUfNxa21b5UY7wIDAQAB"
-    ];
-
-    _dmarc.TXT = [ "v=DMARC1; p=quarantine; fo=1;" ];
-
-    list = {
-      A = pvvHostRecords.microbel.A;
-      MX = [
-        {
-          preference = 10;
-          exchange = "microbel.pvv.ntnu.no.";
-        }
-      ];
-    };
+    # Special services:
 
     minecraft.SRV = [
       {
@@ -83,5 +68,30 @@ in
     ];
 
     _kerberos.TXT = [ "PVV.NTNU.NO" ];
+
+    # E-mail:
+
+    "mail._domainkey".TXT = [
+      "v=DKIM1; h=sha256; k=rsa; "
+      "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsLAI4Fj8lGS1gQbumMCftoynu9G5LCOrs8G/EzbXysKuV5EtCCS3ioJVdt3Bbu5RoTZq0lv0KbIClzW7qPa3u0spt9skOQswkSOhzoraPIwPacEUBRMyc2NYSmnIPthKyb6BTAYB1qcKpRswrNzZ6zbsG8DFD8zEJsbpPGjYSxbluLm+FsQXiX21Biha+psCpDTAGcQODri+Fh5UChYi7MnT7UGd8rvNIYlVPAYPeU0xoUcRRZxHfxLNyOU6TrFQ3MhjSKq06p35y3nN2z/6hjbkxQ8aKc30GB+y2SPrTE8TAXKmIMlWbmhaReFHhOS25XGWfzNVhUfNxa21b5UY7wIDAQAB"
+    ];
+
+    _dmarc.TXT = [ "v=DMARC1; p=quarantine; fo=1;" ];
+    drift.CNAME = [ "mail" ];
+    imap.CNAME = [ "mail" ];
+    mailhost.CNAME = [ "mail" ];
+    pop.CNAME = [ "mail" ];
+    smtp.CNAME = [ "mail" ];
+
+    list = {
+      A = pvvHostRecords.microbel.A;
+      MX = [
+        {
+          preference = 10;
+          exchange = "microbel.pvv.ntnu.no.";
+        }
+      ];
+    };
+
   };
 }