Starting sshd: /etc/ssh/sshd_config line 371: too many allow users

If you get the following error when trying to start sshd:

that means that there are too many "AllowUsers" lines in the file.

What you can do, is remove *all* AllowUsers lines from the /etc/ssh/sshd_config, edit /usr/local/directadmin/conf/directadmin.conf.
Change:
sshdconfig=/etc/ssh/sshd_config

to:
sshdconfig=/etc/ssh/sshd_config.plecibo

Save/exit, restart DirectAdmin.

Type:

touch /etc/ssh/sshd_config.plecibo

and then just double check one more time that there are *no* AllowUsers lines in your /etc/ssh/sshd_conf file.

Restart sshd.

What this will do is have DA add/remove users to a file that is a plecibo, which doesn't have any effect.
As long as there are no AllowUsers lines in the main /etc/ssh/sshd_config file, then all users are allowed to connect. Â If one or more AllowUsers lines are present in the main sshd_config file, then only those, hence the importance to not have any show up. Â Make fully sure you've restarted DA before leaving the system alone, else you migh allow ssh to 1 user, thus blocking root or any other user ssh access.

Note that the /etc/ssh/sshd_config file can be edited from within the Admin Level -> File Editor, so don't fret if you mess it up. Â You can fix it through DA.