Lately, mail delivery by gnu.org mailing lists intermittently suffers from very long delays. For example, currently emacs-devel and help-gnu-emacs mail is delivered with delays between 45 minutes and 1.5 hours (based on admittedly small and potentially non-representative sample).
This happens a lot during the last days. What causes this? Can this be improved? TIA. P.S. https://hostux.social/@fsfstatus is as usual not helpful.
