At Wed, 24 Aug 2016 14:24:32 -0500 (CDT) Ted Hatfield ted@io-tx.com wrote:
On Wed, 24 Aug 2016, Mark Sapiro wrote:
On 08/23/2016 03:55 PM, Ted Hatfield wrote:
Few mails from IP xxx.xxx.xxx.xx were getting rejected from one of filters as Reply-to address is same as the TO address. This is caused as one of our filters triggered these emails as spam. I have added protection for your IP. As a good mailing practice, please use a different email address for your reply-to address.
Don't munge Reply-To: ;)
It seems to me that since dmarc munging adds the senders address to the reply-to header, if a user receives a copy of their own postings this is the result.
No. Based on AOL's reply above, this has nothing to do with DMARC. If you set reply_goes_to_list to This list (note that Poster is the /strongly/ recommended setting) both the To: and Reply-To: headers of outgoing messages will contain the list address.
However, it seems that this means AOL will not accept mail from any list with reply_goes_to_list = This list, and since this is a common, although not recommended, configuration, if this is the case, it seems there should be much more reports of this issue, and I haven't seen that.
Can anyone else confirm that this has happened to them and if so what else can someone do except to wrap the message from senders that implement dmarc rejection as in dmarc_moderation_action?
Even if this is a DMARC issue, Wrap message won't change it because the headers in the wrapper will be the same as those in a Munge from message.
Is there a recommended policy regarding this issue?
Set reply_goes_to_list to Poster
--
I'm running mailman version 2.1.22.
reply_goes_to_list is set to poster
from_is_list is set to "Munge From".
Documentation describes "Munge From" to be
"This action replaces the poster's address in the From: header with the list's posting address and adds the poster's address to the addresses in the original Reply-To: header."
This means that messages with a munged From: header should pass dmarc checks but the senders address will be added to the reply-to header. Does this not mean that the Reply-To: and the To: address will be the same for some users?
The Reply-To: and To: would be the same if those users send the post to themselves and CC it to the list. This is *probably* unlikely, but possible I guess. *Normally* a user posts *To* the list (To: list address), and CC's to themselves (Cc: the poster). Mailman sets the Reply-To: field to the poster's address and replaces the From: header to be from the list:
To: list Reply-To: poster Cc: poster From: list
Ted Hatfield
Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/heller%40deepsoft.com
-- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller@deepsoft.com -- Webhosting Services