Router: Small SPF fix.

Fix the SpamAssassin error: `HELO does not match SPF record`.

Ansible/roles/router/files/nsd/shore.co.il

@@ -2,7 +2,7 @@
 $TTL 1h
 $ORIGIN shore.co.il.
 @               IN      SOA     ns1     hostmaster (
-        2024012601 ; Serial
+        2024020301 ; Serial
         4h         ; Refresh
         1h         ; Retry
         4w         ; Expire
@@ -26,8 +26,8 @@ ns4     IN      A       163.172.74.36
         IN      SPF     "v=spf1 -all"
 
 smtp    IN      A       62.219.131.121
-        IN      TXT     "v=spf1 -all"
-        IN      SPF     "v=spf1 -all"
+        IN      TXT     "v=spf1 a -all"
+        IN      SPF     "v=spf1 a -all"
 
 _imaps._tcp IN  SRV 0 1 993 imap
             IN  TXT "v=spf1 -all"