Ubuntu 16.04命令行sendmail安装挂起

我试图安装sendmail，但尝试生成ssl证书时却挂起。我已经取消了安装过程，后来又取消了锁定所有新软件包的过程。

但是，每当我运行apt-get install <package_name>它，它就会回到sendmail安装并尝试安装ssl证书。

我已重新启动系统，但问题仍然存在。

我该如何解决？

CLI信息

sudo dpkg --configure -a
Setting up sendmail-bin (8.15.2-3) ...
Updating sendmail environment ...
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Writing configuration to /etc/mail/sendmail.conf.
Writing /etc/cron.d/sendmail.
Disabling HOST statistics file(/var/lib/sendmail/host_status).
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Writing configuration to /etc/mail/sendmail.conf.
Writing /etc/cron.d/sendmail.
Could not open /etc/mail/databases(No such file or directory), creating it.
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Creating /etc/mail/databases...

Checking filesystem, this may take some time - it will not hang!
  ...   Done.

Checking for installed MDAs...
sasl2-bin not installed, not configuring sendmail support.

To enable sendmail SASL2 support at a later date, invoke "/usr/share/sendmail/update_auth"


Creating/Updating SSL(for TLS) information
Creating /etc/mail/tls/starttls.m4...
Creating SSL certificates for sendmail.

在这里可以找到类似的问题，但没有解决方案。OP刚刚更改了操作系统。

我也遇到了这个问题。它似乎挂在此脚本的第240行上/usr/share/sendmail/update_tls。

为了解决该问题，我执行了以下命令：

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

现在应该安装。