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?