Merge #2179

2179: Fix resolver r=mergify[bot] a=nextgens

## What type of PR?

bug-fix

## What does this PR do?

Switch to the new API to solve a k8s specific problem

### Related issue(s)
- #2177


Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
Co-authored-by: Billy Chan <shing@PC1>

core/admin/mailu/models.py

@@ -324,7 +324,7 @@ class Domain(Base):
             hostnames = set(app.config['HOSTNAMES'].split(','))
             return any(
                 rset.exchange.to_text().rstrip('.') in hostnames
-                for rset in dns.resolver.query(self.name, 'MX')
+                for rset in dns.resolver.resolve(self.name, 'MX')
             )
         except dns.exception.DNSException:
             return False

core/admin/mailu/utils.py

@@ -52,7 +52,7 @@ resolver.flags = dns.flags.AD | dns.flags.RD
 
 def has_dane_record(domain, timeout=10):
     try:
-        result = resolver.query(f'_25._tcp.{domain}', dns.rdatatype.TLSA,dns.rdataclass.IN, lifetime=timeout)
+        result = resolver.resolve(f'_25._tcp.{domain}', dns.rdatatype.TLSA,dns.rdataclass.IN, lifetime=timeout)
         if result.response.flags & dns.flags.AD:
             for record in result:
                 if isinstance(record, dns.rdtypes.ANY.TLSA.TLSA):