Cliff Crerar's questions

This question is a follow up to Strange symbols in front of suspicious services

I have the following are dead service references om my AWS EC2 instance that is running as an email exchange for my own domain.

UNIT                           LOAD      ACTIVE   SUB     DESCRIPTION
ΓùÅ auditd.service             not-found inactive dead    auditd.service
ΓùÅ connman.service            not-found inactive dead    connman.service
ΓùÅ console-screen.service     not-found inactive dead    console-screen.service
ΓùÅ display-manager.service    not-found inactive dead    display-manager.service
ΓùÅ exim4.service              not-found inactive dead    exim4.service
ΓùÅ fcoe.service               not-found inactive dead    fcoe.service
ΓùÅ iscsi-shutdown.service     not-found inactive dead    iscsi-shutdown.service

I have been assured that these cannot and has not harmed my server in any way. Still, I don't want to leave them dangling since this email server is my child and I can't stand it wearing torn clothes.

The task might seem trivial but I would please like advise on what action to take to resolve this?

I have an EC2 instance running a postfix-dovecot email server. I use an AWS security key to access this EC2 and I consider the security pretty tight.

When I run: systemctl list-units --type service --all

I see these suspicious looking entries on the list:

UNIT                           LOAD      ACTIVE   SUB     DESCRIPTION
ΓùÅ auditd.service             not-found inactive dead    auditd.service
ΓùÅ connman.service            not-found inactive dead    connman.service
ΓùÅ console-screen.service     not-found inactive dead    console-screen.service
ΓùÅ display-manager.service    not-found inactive dead    display-manager.service
ΓùÅ exim4.service              not-found inactive dead    exim4.service
ΓùÅ fcoe.service               not-found inactive dead    fcoe.service
ΓùÅ iscsi-shutdown.service     not-found inactive dead    iscsi-shutdown.service

My server is running: Spamassasin, Clamav, Spamass-milter and AppArmor

My server only allows authenticated access on SSL/TLS via a domain certificate signed by a trusted certificate authority. It does not allow mail to sent from unknown domain users or unknown clients.

Open ports on my EC2 security group for any IP address:
HTTP    80
HTTPS   443
IMAP    143
IMAPS   993
SMTPS   465
SMTPS   587
MYSQL   3306

Custom services 7500,8001,8002,8003,8080,8444,8443

SSH 22 Restricted to specific IP addresses

I can see these suspicious service entries are not running. I want to please know:

1. What does it mean?
2. What has happened and is it malicious?
3. How does it affect my server?
4. What action should I take?