I've been made aware of some of my messages to this list going into spam because of a failed DMARC check.
How should I fix this?
Note: I have control over my sending domain's DNS. Should I just remove the DMARC DNS record?
On 16/04/2020 09:29, Mark Rogers wrote:
I've been made aware of some of my messages to this list going into spam because of a failed DMARC check.
How should I fix this?
Note: I have control over my sending domain's DNS. Should I just remove the DMARC DNS record?
I have never had that problem with anything from you - what do your DMARC records look like?
Cheers, Laurie.
On Thu, 16 Apr 2020 at 11:25, Laurie Brown laurie@brownowl.com wrote:
I have never had that problem with anything from you - what do your DMARC records look like?
When I posted, they looked like this: type: TXT name: _dmarc.more-solutions.co.uk record: v=DMARC1; p=quarantine; rua=mailto:systems+dmarc@more-solutions.co.uk
type: TXT name: more-solutions.co.uk record: v=spf1 include:_spf.google.com include:mailgun.org ~all
I have since changed them to use the services of fraudmarc.com (so not substantially changed in actual content, but going via fraudmarc's servers). One thing I have added to the SPF record is "include:lists.alug.org.uk" although I don't know if that is helpful/wrong.
On 16/04/2020 12:22, Mark Rogers wrote:
On Thu, 16 Apr 2020 at 11:25, Laurie Brown laurie@brownowl.com wrote:
I have never had that problem with anything from you - what do your DMARC records look like?
When I posted, they looked like this: type: TXT name: _dmarc.more-solutions.co.uk record: v=DMARC1; p=quarantine; rua=mailto:systems+dmarc@more-solutions.co.uk
type: TXT name: more-solutions.co.uk record: v=spf1 include:_spf.google.com include:mailgun.org ~all
I have since changed them to use the services of fraudmarc.com (so not substantially changed in actual content, but going via fraudmarc's servers). One thing I have added to the SPF record is "include:lists.alug.org.uk" although I don't know if that is helpful/wrong.
Here's mine:
v=DMARC1; p=none; rua=mailto:dmarc@convergent-ict.com; ruf=mailto:dmarc@convergent-ict.com
See https://mxtoolbox.com/SuperTool.aspx?action=dmarc%3aconvergent-ict.com&r...
Yours:
v=DMARC1;p=quarantine;pct=0;rua=mailto:a+63542244@fdmarc.net,mailto:systems+dmarc@more-solutions.co.uk;ruf=mailto:f+63542244@fdmarc.net;ri=3600;fo=1;
See: https://mxtoolbox.com/SuperTool.aspx?action=dmarc%3amore-solutions.co.uk&...
SPF:
https://mxtoolbox.com/SuperTool.aspx?action=spf%3amore-solutions.co.uk&r...
And my SPF record:
v=spf1 include:mg3.convergent-ict.com include:mg5.convergent-ict.com include:smtp.convergent-ict.com ~all
For what that's all worth!
Cheers, Laurie.
On Thu, 16 Apr 2020 12:22:10 +0100 Mark Rogers mark@more-solutions.co.uk wrote:
One thing I have added to the SPF record is "include:lists.alug.org.uk" although I don't know if that is helpful/wrong.
lists.alug.org.uk does not have an SPF or TXT record (nor does alug.org.uk), so that is definitely wrong. I suspect it is unhelpful.
If you really wanted to add it, I think "mx:lists.alug.org.uk" might do what you were aiming for.
(I've not replied to the DMARC bits because I don't remember it well enough and have not time to look it up.)
Hope that helps,
On Fri, 17 Apr 2020 at 12:51, MJ Ray mjr@phonecoop.coop wrote:
lists.alug.org.uk does not have an SPF or TXT record (nor does alug.org.uk), so that is definitely wrong. I suspect it is unhelpful.
OK thanks, I should know better than to "play"! Removed now.
If you really wanted to add it, I think "mx:lists.alug.org.uk" might do what you were aiming for.
I'm not really sure what I was aiming for to be honest; as I understand it the problem is that messages sent by ALUG claim to have come from me but cannot be verified as such because both the subject and message contents have been modified by ALUG.
Is DMARC suitable for list email? A cursory Google suggests it can be only if the list doesn't modify messages in the way that ALUG and most other mailing lists do.
I have set the policy to "none" for now (was "quarantine") but should I remove DMARC altogether? That said I have pct set to zero so none should be quarantined anyway by my understanding?
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Laurie Brown -
Mark Rogers -
MJ Ray