package:linux-modules-nvidia-460-5.8.0-63-generic:5.8.0-63.71~20.04.1
Setting up postfix (3.5.6-1) ...
Adding group `postfix' (GID 134) ...
Done.
Adding system user `postfix' (UID 127) ...
Adding new user `postfix' (UID 127) with group `postfix' ...
Not creating home directory `/var/spool/postfix'.
Creating /etc/postfix/dynamicmaps.cf
Adding group `postdrop' (GID 135) ...
Done.
setting myhostname: chad-desktop..
setting alias maps
setting alias database
mailname is not a fully qualified domain name.  Not changing /etc/mailname.
setting destinations: $myhostname, Chad Ely, chad-desktop, localhost.localdomain, localhost
setting relayhost: 
setting mynetworks: 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
setting mailbox_size_limit: 0
setting recipient_delimiter: +
setting inet_interfaces: all
setting inet_protocols: all
/etc/aliases does not exist, creating it.
WARNING: /etc/aliases exists, but does not have a root alias.

Postfix (main.cf) is now set up with a default configuration.  If you need to 
make changes, edit /etc/postfix/main.cf (and others) as needed.  To view 
Postfix configuration values, see postconf(1).

After modifying main.cf, be sure to run 'systemctl reload postfix'.

Running newaliases
newaliases: warning: valid_hostname: misplaced delimiter: chad-desktop..
newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: chad-desktop..
dpkg: error processing package postfix (--configure):
 installed postfix package post-installation script subprocess returned error exit status 75