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--- wiki:receive_dmarc_reports_different_domain [2020/12/22 11:42] – remove unused titles antisa
+++ wiki:receive_dmarc_reports_different_domain [2021/04/07 11:05] (current) – add DMARC and DKIM operation from Microsoft Docs antisa
@@ Line 7: / Line 7: @@
 This is External Destination Verification. You can now receive DMARC reports for example.com domain to foobar.com email address.
+===== Troubleshooting =====
+<wrap em>ERROR</wrap>:
+<code>
+09:42:58 nameserver named[25740]: /etc/bind/example.com.zone:26: foo.bar._report._dmarc.example.com: bad owner name (check-names)
+09:42:58 nameserver named[25740]: zone example.com/IN: loading from master file /etc/bind/example.com.zone failed: bad owner name (check-names)
+09:42:58 nameserver named[25740]: zone example.com/IN: not loaded due to errors.
+</code>
+This happens because bind9 strict RFC checking.
+Check where in the zone file you have defined the record. Putting it after records where no hostname is defined doesn't seem to work and produces above message. Example:
+<code>
+                    MX   1 aspmx.l.google.com.
+                    MX   5 alt1.aspmx.l.google.com.
+                    MX   5 alt2.aspmx.l.google.com.
+                    MX  10 alt3.aspmx.l.google.com.
+                    MX  10 alt4.aspmx.l.google.com.
+                    MX  15 afejaofwifjwafiajwfi32jfoiw3jawfeijfw.mx-verification.google.com
+foo.bar._report._dmarc TXT "v=DMARC1;"
+</code>
+This should work:
+<code>
+...
+ns2                  AAAA <quadip..>
+; External Destination Verification; receive DMARC reports from auto23.hr domain to example.com email
+foo.bar._report._dmarc  TXT "v=DMARC1;"
+...
+</code>
+Another solution is to turn off bind9 RFC checks in zone definition file (''named.conf.local'') by adding ''check-names warn;'':
+<code>
+zone "example.com" {
+        type master;
+        file "/etc/bind/example.com.zone";
+        allow-query { any; };
+        allow-transfer { slave_servers; };
+        check-names warn;
+};
+</code>
+===== See also =====
+  * [[https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/use-dmarc-to-validate-email?view=o365-worldwide|DMARC and DKIM operation from Microsoft Docs]]
+===== References =====
+  * https://linux.m2osw.com/setting-bind-get-letsencrypt-wildcards-work-your-system-using-rfc-2136