Migration to Mailman 3 (v2)

Hello everyone, I've just completed migration of the DebOps mailing list server from the old Mailman 2.1.x version to Mailman 3.x installed on Debian Buster - all with DebOps of course. The migration was done by setting up a new VM, therefore IP address of the server has changed, which might impact e-mail delivery. The new service also uses DomainKeys to sign outgoing mail messages, which also can impact message filtering on the recipient hosts. This message is a final test to see if everything was set up successfully - and indeed there was a problem with permissions on the server. Let's hope that this time the mail messages will be sent. If you want, you can check the new web interface and archives on https://lists.debops.org/. Let me know if there are any issues with the service. Now back to our regularly scheduled programming, Maciej