diff --git a/linkcheck/checker/mailtourl.py b/linkcheck/checker/mailtourl.py
index c2452579..536f0baa 100644
--- a/linkcheck/checker/mailtourl.py
+++ b/linkcheck/checker/mailtourl.py
@@ -328,7 +328,7 @@ class MailtoUrl(urlbase.UrlBase):
                 tag=WARN_MAIL_NO_MX_HOST,
             )
             try:
-                answers = resolver.query(domain, 'A')
+                answers = resolver.resolve(domain, 'A', search=True)
             except DNSException:
                 answers = []
             if len(answers) == 0:
diff --git a/tests/checker/test_ignoreerrors.py b/tests/checker/test_ignoreerrors.py
index 8b2d3420..96dd4fb1 100644
--- a/tests/checker/test_ignoreerrors.py
+++ b/tests/checker/test_ignoreerrors.py
@@ -43,6 +43,7 @@ class TestFile(LinkCheckTest):
         ]
         self.direct(url, resultlines, confargs=confargs)
 
+    @need_network
     def test_no_error(self):
         """ Test that unmatched errors are not ignored. """
         self._test("mailto:good@example.com", "", "", True)