• Setting up email with SMTP on Ubuntu/Debian Servers

# apt install msmtp

# cat /etc/msmtprc

defaults
port 25
tls off
#tls on
auth off

account default

host mail.isp.un
domain server.corpX.un
#from asterisk@server.corpX.un  #need for mutt

#host server.corpX.un
#domain corpX.un
#from root@lan.corpX.un
#aliases /etc/aliases

$ cat mail.txt

Content-Type: text/plain; charset=UTF-8
To: userX@isp.un
From: Asterisk <asterisk@server.corpX.un>
Subject: Record
Запись
cделана

cat mail.txt | msmtp -f asterisk@server.corpX.un userX@isp.un

host# apt install msmtp-mta bsd-mailx

# cat /etc/msmtprc
account default
host gate.corpX.un
#from root@host.corpX.un

# cat /etc/aliases
...

# newaliases

# mail root

root@gitlab:/# /usr/sbin/sendmail -i -f gitlab@gitlab.corpX.un -- student@corpX.un