Hey there,
After reviewing your project description its clear that you want a solution about your spam problem of your outgoing emails.
I'm very experienced with System Administration, Network Administration, SMTP Server Configuration, SMTP Authentication (SPF, Dkim, Dmarc, rDNS), SMTP IP Rotation, Email Handling, Email Marketing.
I'll be happy to do this job for you.
Thanks in advance for giving the opportunity to working with you.
Have a good day.
Best Regards,
Serazum Munir.