diff --git a/bremen.freifunk.net.zone b/bremen.freifunk.net.zone
index 8ec99eb..9f33ce0 100644
--- a/bremen.freifunk.net.zone
+++ b/bremen.freifunk.net.zone
@@ -1,6 +1,6 @@
 $TTL 1D
 			IN	SOA	dns noc.bremen.freifunk.net. (
-				    2020052502	; Serial
+				    2020112201	; Serial
 				    4H		; Refresh
 				    1H		; Retry
 				    2W		; Expire
@@ -12,6 +12,8 @@ $TTL 1D
 
 				MX	50 mail
 				SPF	"v=spf1 mx -all"
+				TXT	"v=spf1 mx -all"
+				TXT	"v=DMARC1;p=quarantine;pct=100;rua=mailto:postmaster@bremen.freifunk.net;adkim=r;aspf=r;p=none;sp=none"
 
 				A	185.117.213.242
 				AAAA	2a06:8782:ff00::f2
@@ -75,6 +77,7 @@ lists				A	185.117.213.244
 				AAAA	2a06:8782:ff00::f4
 				MX	50 lists
 				SPF	"v=spf1 mx -all"
+				TXT	"v=spf1 mx -all"
 
 _adsp._domainkey.lists		TXT	"dkim=all"
 default._domainkey.lists	TXT	"v=DKIM1; k=rsa; t=s; s=email; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq5dupjOXnKpNouRuQ1z0zAeLnS+Pu1dtubTSzl+GP2tO7yPz31EYhjKuPHAhYZT6i7sKi56HAMucFiSHrw3uSuPDUFufuYMSTvDmGwkTan8DTMz8HN/s0AioAjqAeiTtpGgidxIz9xf05qpy8l8CdFHh8OHcAE/CuGzUzOMQs8wIDAQAB"