[clamav-users] OT: DMARC

Joel Esler (jesler) jesler at cisco.com
Thu Jun 28 17:21:43 UTC 2018


Mailman does have the ability, after it alters the message, do have dkim operate properly.   I run about 13 mailman lists.  Clamav is the only one we have set up in the situation it is in (for legacy reasons), and ClamAV is the only list I manage that has this problem.  So I know it's solvable.

> On Jun 28, 2018, at 1:06 PM, Reindl Harald <h.reindl at thelounge.net> wrote:
> 
> you don't understand DKIM!
> 
> as logn as the Form-Header is a foreign domain (the sender) and the
> body/subject is mangeled (subject prefix, list-footer) you can do
> whatever you want in your DNS entries, if you would be able to fix that
> with *your* DNS records DKIM would be useless at all
> 
> Am 28.06.2018 um 18:49 schrieb Joel Esler (jesler):
>> Mailman is used, and Mailman will break dkim if not properly configured in DNS.  We are working with our operations team to create and correct the DNS entries needed.
>> 
>> Sent from my iPad
>> 
>>> On Jun 28, 2018, at 12:40 PM, Benny Pedersen <me at junc.eu> wrote:
>>> 
>>> 
>>> 
>>> On 28. jun. 2018 18.11.18 Dianne Skoll <dfs at roaringpenguin.com> wrote:
>>> 
>>>>> 
>>>> I'm not sure what software runs the ClamAV mailing list, but I'd have
>>>> thought most would have ways to work around this.  I use Mailman myself,
>>>> and recent versions have options to work around DMARC problems.
>>> 
>>> Better not use mailman it will break dkim if change of body, mailman does not break dmarc or for rhat matter spf
>>> 
>>> I think you know more on email then i do
>>> 
>>> Postfix maillist does not break dkim at all, see forward to other maillist does maillist as good




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