I have an SL7.8 laptop that runs exim for internal email - messages to/from root about cron jobs, that sort of thing. Exim doesn't handle any mail to or from the outside. There was an upgrade to exim-4.93-2.el7.x86_64 a few days ago, and since then messages of the form DMARC failure to load tld list '/usr/share/publicsuffix/public_suffix_list.dat': No such file or directory have been appearing the exim logs. 'yum provides' doesn't list any package as providing that file. As far as I can tell, no mail has been getting lost. But why should there be an appeal to DMARC for internal mail anyway? Stephen Isard