On 1/5/18 10:55 PM, Mark Sapiro wrote:
On 01/05/2018 07:31 PM, Richard Damon wrote:
I use Mailman versioon 2.1.25 on a shared host, and in the past couple
of days, something seems to have changed, as posts from AOL users are no
longer getting their from address munged like they were a week ago, and
I am getting massive bounces for DMARC rejection when a poster from AOL
posts.
Has something changed with their settings, and is their anything I can
do about it?
$ dig txt _dmarc.aol.com
...
;; ANSWER SECTION:
_dmarc.aol.com. 3600 IN TXT "v=DMARC1; p=reject; pct=100;
rua=mailto:d...@rua.agari.com; ruf=mailto:d...@ruf.agari.com;";
So, they are still publishing p=reject, and in any case if their policy
changed so dmarc_moderation_action wasn't being applied, the mail
wouldn't bounce for DMARC either.
First, ensure that the list's Privacy options... -> Sender filters ->
dmarc_moderation_action is Mung From.
Assuming it is, if you have access to Mailman's logs, check the 'error'
log for messages like 'DNS lookup for dmarc_moderation_action for list
<listname> not available' which means that
import dns.resolver
from dns.exception import DNSException
(from the dnspython package) failed. Also look for messages containing
DNSException or DMARC.
Check the 'vette' log for messages like
'<listname>: DMARC lookup for u...@aol.com (_dmarc.yahoo.com) found
p=reject in _dmarc.yahoo.com. = v=DMARC1; p=reject; pct=100;
rua=mailto:dmarc_y_...@yahoo.com;'
which would indicate that the lookups are being done.
Just a user on a shared host, so no access to logs or the like, thought
I would check here before raising issue with Host in case it was a know
issue.
Haven't touched these settings in a long time:
dmarc_moderation_action is Munge From, which had been working just a few
days ago, and stopped.
Sounds like its off to the host provider and see if they did something
recently.
--
Richard Damon
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