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authorMark Sapiro <mark@msapiro.net>2020-05-28 13:27:34 -0700
committerMark Sapiro <mark@msapiro.net>2020-05-28 13:27:34 -0700
commit5ef49284434d4a6ba304889cf89c468e7c97a324 (patch)
tree2f0e42ffc38cfcd4a459fbc48a4e56e00dc0ceb9 /Mailman
parent248ca38ffb4821a131460c9953aa21d6fe7cec04 (diff)
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DMARC mitigation no longer misses upper case names.
Diffstat (limited to 'Mailman')
-rw-r--r--Mailman/Utils.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/Mailman/Utils.py b/Mailman/Utils.py
index 36fbd1f9..6e39c532 100644
--- a/Mailman/Utils.py
+++ b/Mailman/Utils.py
@@ -1343,12 +1343,14 @@ def _DMARCProhibited(mlist, email, dmarc_domain, org=False):
cnames = {}
want_names = set([dmarc_domain + '.'])
for txt_rec in txt_recs.response.answer:
+ # Don't be fooled by an answer with uppercase in the name.
+ name = txt_rec.name.to_text().lower()
if txt_rec.rdtype == dns.rdatatype.CNAME:
- cnames[txt_rec.name.to_text()] = (
+ cnames[name] = (
txt_rec.items[0].target.to_text())
if txt_rec.rdtype != dns.rdatatype.TXT:
continue
- results_by_name.setdefault(txt_rec.name.to_text(), []).append(
+ results_by_name.setdefault(name, []).append(
"".join(txt_rec.items[0].strings))
expands = list(want_names)
seen = set(expands)