[21:51] <foo> If I want to force ssh keys and no passwords, I think I need PasswordAuthentication no in /etc/ssh/sshd_config - right?
[21:51] <foo> Pretty sure I'm reading that properly
[21:59] <genii> AuthenticationMethods publickey password  to AuthenticationMethods publickey
[21:59] <foo> genii: ah! thanks
[22:00] <foo> https://help.ubuntu.com/community/AutomaticSecurityUpdates -> I just set this up for the first time, using the unattended-upgrades method. On a ubuntu server. Is there a way to "test this" ? 
[22:17] <genii> sudo unattended-upgrades -d
[22:17] <foo> genii: thank you. :) 
[22:18] <genii> Glad to assist
[22:19] <foo> I have a simple system running a dns server to stop ads. But this system does not have mail setup. What's the simplest email set up to have it be able to email me (so I can get emails from unattended-upgrades). I installed nullmailer but think I need an SMTP server?
[22:19] <foo> I have mailgun, maybe I can set up a new domain there and use that... but... wondering if there is another way
[22:21] <genii> I use sendmail so that applications requiring an MTA accept that one is installed and don't install a fullblown postfix or exim4
[22:21] <JanC> I think nullmailer also satisfies that requirement?
[22:22] <foo> JanC: I thought so too, maybe I set up the hostname wrong. 
[22:22]  * foo investigates
[22:22] <JanC> Provides: mail-transport-agent
[22:23] <JanC> applications that need an MTA should depend on mail-transport-agent, and as nullmailer provides that, it should be enough
[22:24] <JanC> I don't know how it talks to remote mail servers though...
[22:24] <foo> smtp: Failed: Connect failed / Sending failed: Host not found
[22:24] <foo> is what I'm getting in syslog from a quick echo hi|mail me@mydomain.com
[22:25] <foo> This is a home system, so I don't really have a FQDN that maps to it.
[22:36] <genii> If you fiddle with your router to forward SMTP on port 25 ( and maybe POP if it's able to use that) you can use the outward facing IP
[22:39] <genii> Hm, Debian nullmailer page seems to indicate it only relays to an external SMTP machine
[22:39] <foo> genii: yeah, I just set it up to work with mailgun. :) I used my mailgun sandbox 
[22:39]  * foo makes notes