Temporary block of @canonical.com sending to @lists.ubuntu.com

[Mark Shuttleworth]

Well this is an interesting conundrum.

Surely every company mail system that does DMARC has this issue with
mailing lists? Is the mail system @canonical.com doing something unusual?
It sounds from Robie's description that Canonical is 'just doing DMARC
conservatively'.

Thanks for any clarification,
Mark
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