_$: apt-get install postfix
Either during the installation or with
_$: dpkg-configure postfix
Configuration style -> Satellite System mail name -> default.domain.com SMTP relay host -> mail.domain.com Root and postmaster mail recipient -> <user> Other destinations to accept mail for (blank for none): -> Default values Force synchronous updates on mail queue? -> No Local networks: -> Default values Mailbox size limit (bytes): -> 0 Local address extension character: -> + Internet protocols to use: -> all
Note: Some cloud providers might have troubles if the mail server that relays your email is in the same network than this host and you use the FQDN. Instead, we might need to use the mail server’s internal IP address. For instance, 192.168.1.11.
In order to do the DNS resolution, postfix will use whatever we have in the
/etc/resolv.conf file. Anything you write in the
/etc/hosts file will be ignored. Instead, we will configure postfix:
/etc/postfix/main.cf: --------------------- ... relayhost = 192.168.1.11
_$: echo "test" | sendmail <user>@domain.com _$: echo "test" | mail <user>@domain.com -s "Test"