/etc/cron.daily/nethserver-letsencrypt-certs:
Challenge failed for domain ftp.lagos.ind.br
Challenge failed for domain mail.lagos.ind.br
Challenge failed for domain mail2.lagos.ind.br
Challenge failed for domain server.lagos.ind.br
Challenge failed for domain imap.lagos.ind.br
Challenge failed for domain pop3.lagos.ind.br
Challenge failed for domain smtp.lagos.ind.br
Some challenges have failed.