I don't normally send out status mails for regular server updates, but since this is A Big Issue right now, I'm just reporting that all of our servers run centos which was patched very recently for Meltdown(see: https://access.redhat.com/errata/RHSA-2018:0007). All of our running instances are fully updated, and I'll make sure any further security patches are installed asap. While this can in theory be automated, right now it's not because the servers can't just be rebooted arbitrarily or all at once, or it would cause downtime, and it's important to make sure each server reboots cleanly and is healthy before updating the next one. Automation for this is on my list of things to do for a rainy day though. P.S. Now that everyone is back to work, updates on addons.thunderbird.net and other in-progress stuff will be forthcoming next week.