[Xymon] New Xymon Server email

[Kris Springer]

I just built a new Ubuntu 19.10 server and installed Xymon server on it 
using the premade apt package.  I've got working hosts.cfg, 
analysis.cfg, and client-local.cfg.  The webpage works fine and client 
data flows in and displays accurately.

I've also configured alerts.cfg to email me for everything, but I'm not 
receiving any emails in my mailbox.  In the past when I've built a xymon 
server box I installed Sendmail that took care of sending the emails 
out.  But this is 2020 and I'm assuming something else is built into the 
Xymon Server code that does the emailing.  What am I missing here?  Do I 
still need to install a separate mailer?

-- 

Kris Springer