Resolving Microsoft remediation errors requires a multifaceted approach that includes persistent re-attempts, strict compliance with Microsoft's email policies (SPF, DKIM, DMARC), diligent list hygiene, proactive IP warming, consistent monitoring of bounce rates and feedback loops, and active sender reputation management. Utilizing Microsoft's SNDS and JMRP programs, and checking IP reputation via third-party services are crucial. Ensuring correctly configured reverse DNS records, delivering high-quality content, segmenting audiences, and directly contacting Microsoft support with detailed information can expedite the remediation process. Understanding and addressing issues indicated by error codes like S3150, and leveraging available resources like community threads and blog posts can also contribute to successful resolution.