If you don't plan on your own SMTP settings and want MCA Suite to send out emails on your behalf most likely it will get marked as spam by other mail records. To improve being marked as spam you can add an SPF record to your domain record. MCA Suite uses FuseMail to send outgoing emails.
Please add v=spf1 include:spf.mailanyone.net mx a -all to your DNS records as text. Including spf.mailanyone.net in your SPF records will associate all FuseMail IP ranges with your domain in DNS, stating that FuseMail IPs are allowed to send email on behalf of your domain.
You will most likely have an existing SPF record, just add include:spf.mailanyone.net to the list.
For example:
v=spf1 include:spf1.domain.com include:spf2.domain2.com spf.mailanyone.net ~all
Here are some more help links and examples from different DNS: