What is sendmail describing below?

When I install sendmail from the debian repos, I get the list below result:

Disabling HOST statistics file(/var/lib/sendmail/host_status).
Creating /etc/mail/sendmail.cf...
Creating /etc/mail/submit.cf...
Informational: confCR_FILE file empty: /etc/mail/relay-domains
Informational: confCT_FILE file empty: /etc/mail/trusted-users
Updating /etc/mail/access...
Updating /etc/mail/aliases...
WARNING: local host name (ixtmixilix) is not qualified; see cf/README: WHO AM I?

Can a person please inform me what this suggests, what I require to do to certify my hostname?

2019-05-04 05:18:42
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Answers: 2

It's describing this page from the readme, which informs you just how to define your hostname. It's advising you that your hostname will not function outdoors your neighborhood network; sendmail affixes your hostname as the sender of the message, yet it's mosting likely to be pointless on the various other end due to the fact that individuals outside your neighborhood network can not find the equipment ixtmixilix. You need to define a hostname that can be settled from anywhere, like ixtmixilix.example.com

2019-05-07 23:55:01

This result describes a Fully-qualified domain name (FQDN). Which is either an IP address or a domain (something with a dot in it ).

2019-05-07 23:53:08