On Sat, 2020-12-12 at 22:25 +0200, Efraim Flashner wrote: > If there's no mail server setup on the Guix System machine where does > the mail go? Not sure, I don't know how rottlog works and what parameters it gives to sendmail. Can emails be sent without a mail server? Like when they are sent to a UNIX account for example? That's what I would guess it does, write mail to /var/mail/root or something. Actually fixing mail reporting might need additional patching, I focused on fixing the issue I met and had logs of.