The mailing list for listmasters using Sympa

["Boyle, Brian" <address@concealed>]

We run a sympa service that is DMARC compliant, but are suddenly seeing a number of list e-mails being tagged in Microsoft Outlook as “Unverified” e-mails, with a banner on the e-mail stating, “We can’t verify that this e-mail came from the sender so it might not be safe to respond to it”.

 

This might be related to List e-mails in general, and in the case of sympa specifically, showing up as Sent ‘by Listname-Request on behalf of Listname’

 

Anybody else seeing this with Exchange and/or find a workaround? It seems to be new behavior that has just hit Outlook Online and newer Windows Outlook clients.

 

Brian