I need consultancy regarding domain based email. Currently my website is on shared hosting, and from time to time, my email gets banned by spamhaus.org for something that has nothing to do with my activities, but I am unable to send emails for few days.

I need consultant to advise me what is my best option if I want to avoid blocking of my domain based email addresses by spamhaus.org. I have website on shared hosting and my email gets banned or blacklisted by spamhaus.org for few days for something that has nothing to do with my activities. I am considering to activate Microsoft Exchange or G suite for my small company if that is the solution to blocked emails. I also want to know more options, should I have dedicated hosting, or it can stay as shared and so on.

I need someone who can explain everything about this in 15 - 20 minutes and tell me my options so I don't get in situation that spamhaus.org or any other organization prevent me from sending emails, because I really need my email working properly all the time.

Attached, you can see some files that I receive when I send email to somebody.