# sua loi khi chay sudo sendmailconfig bi treo
# Bam Ctrl + X hoac Z de thoat khoi process dang chay
cd /etc/mail/tls
sudo openssl dsaparam -out sendmail-common.prm 2048
sudo chown root:smmsp sendmail-common.prm
sudo chmod 0640 sendmail-common.prm
sudo dpkg --configure -a
# chay lai lenh
sudo sendmailconfig