sudo apt install smartmontools fails

when running the above command I get:

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  libgsasl7 libkyotocabinet16v5 libmailutils5 libmysqlclient20 libntlm0
  mailutils mailutils-common mysql-common postfix
Suggested packages:
  mailutils-mh mailutils-doc procmail postfix-mysql postfix-pgsql postfix-ldap
  postfix-pcre postfix-lmdb postfix-sqlite sasl2-bin dovecot-common
  postfix-cdb postfix-doc gsmartcontrol smart-notifier
The following NEW packages will be installed:
  libgsasl7 libkyotocabinet16v5 libmailutils5 libmysqlclient20 libntlm0
  mailutils mailutils-common mysql-common postfix smartmontools
0 upgraded, 10 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/3,727 kB of archives.
After this operation, 16.9 MB of additional disk space will be used.
Do you want to continue? [Y/n]
Then when entering "y" I get this:

┌────────────────────────┤ Postfix Configuration ├────────────────────────┐
  │ │
  │ Please select the mail server configuration type that best meets your
  │ needs.
  │
  │ No configuration:
  │ Should be chosen to leave the current configuration unchanged.
  │ Internet site:
  │ Mail is sent and received directly using SMTP.
  │ Internet with smarthost:
  │ Mail is received directly using SMTP or by running a utility such
  │ as fetchmail. Outgoing mail is sent using a smarthost.
  │ Satellite system:
  │ All mail is sent to another machine, called a 'smarthost', for
  │ delivery.
  │ Local only:
  │
  │ <Ok>
  │ │
  └─────────────────────────────────────────────────────────────────
There is NO WAY out of this, clicking on OK , cr ,esc, none work. Thus smartmontools is not installed.
I believe the Mailutls cause the above request, but I know no way to bypass this problem. It happens on three different computers all running 18.04 LTS, all up to date.