Expert Microsoft consulting and implementation
Expert Exchange Online and hybrid support for enterprise email environments. From migrations to security, we deliver reliable email infrastructure for mission-critical communications.
End-to-end Microsoft Exchange consulting from deployment and migration to security and ongoing support.
Complete Exchange Online administration and optimization for Microsoft 365 environments. Maximize email productivity with expert configuration and ongoing management.
Seamless integration between on-premises Exchange and Exchange Online. Enable coexistence during migrations with unified address books and free/busy sharing.
minimal-disruption migrations from on-premises Exchange, G Suite, or other email platforms to Exchange Online with comprehensive planning and execution.
Protect your organization from email-based threats with advanced security configurations, anti-phishing policies, and data loss prevention.
Meet regulatory requirements with comprehensive email retention, litigation hold, and archiving solutions designed for compliance-heavy industries.
Round-the-clock support with dedicated engineers and guaranteed SLAs for mission-critical email environments.
Deep expertise in critical Exchange areas including mail flow, eDiscovery, mobile device management, and identity security.
Configure and troubleshoot mail flow rules, connectors, and routing for optimal email delivery and security filtering.
Implement robust eDiscovery capabilities for legal compliance, internal investigations, and regulatory requirements.
Secure and manage mobile access to Exchange email with comprehensive MDM policies and conditional access.
Secure email access with modern authentication, multi-factor authentication, and conditional access policies.
Our proven methodology ensures seamless migrations from on-premises Exchange to Exchange Online with minimal user disruption.
Comprehensive analysis of your current Exchange environment, mailbox inventory, and migration requirements.
Detailed migration plan with timeline, batch scheduling, and rollback procedures for minimal-disruption migrations.
Test migration with pilot users to validate procedures, identify issues, and refine the process before full deployment.
Execute migration in scheduled batches with real-time monitoring and support for seamless user transition.
Post-migration validation, performance optimization, and decommissioning of legacy infrastructure.
Get a free migration assessment to understand your timeline, costs, and recommended approach for moving to the cloud.
Get Free Migration AssessmentProtect your organization from email-based threats and meet regulatory requirements with our comprehensive security solutions.
Built-in protection against spam, malware, and phishing with multi-layered filtering.
Advanced threat protection with Safe Attachments, Safe Links, and anti-phishing policies.
Prevent sensitive data leakage with DLP policies for PII, PHI, and financial data.
Protect sensitive communications with Microsoft Purview Message Encryption.
Investigate threats with Threat Explorer and automated investigation and response.
Automated response to security incidents with playbooks and remediation workflows.
Email security and archiving configurations meeting HIPAA requirements for healthcare organizations.
Security controls and audit trails supporting SOC 2 Type II certification requirements.
Data subject access requests, retention policies, and cross-border transfer controls.
eDiscovery, litigation hold, and content search capabilities for legal proceedings.
With 29 years of Microsoft Exchange expertise, we bring unmatched depth and experience to every engagement.
Certified expertise in Microsoft 365 and Exchange with direct access to Microsoft engineering resources.
Proven experience managing Exchange environments with 100,000+ mailboxes across Fortune 500 companies.
Deep knowledge of email security, threat protection, and compliance requirements for regulated industries.
Round-the-clock support with guaranteed SLAs and dedicated account management for enterprise clients.
Schedule a free consultation with our Exchange experts and discover how we can enhance your email security, reliability, and compliance.
Response within 24 hours. No obligation.
EPC Group provides M365 deployment, migration, governance, security configuration, Copilot readiness, compliance setup, and managed services. We specialize in enterprise M365 environments with 1,000+ users requiring HIPAA, SOC 2, or FedRAMP compliance.
M365 consulting ranges from $50K-$300K. A focused migration costs $50K-$100K, enterprise governance and security implementation costs $100K-$200K, and full platform optimization with Copilot costs $200K-$300K. EPC Group offers fixed-price engagements.
Yes. EPC Group configures Microsoft 365 compliance features including retention policies, DLP, sensitivity labels, eDiscovery, communication compliance, and information barriers. We map these controls to specific frameworks: HIPAA, SOC 2, FedRAMP, GDPR, and CCPA.
EPC Group manages complex tenant-to-tenant migrations for M&A scenarios including mailbox migration, SharePoint content, Teams channels, OneDrive data, security groups, and conditional access policies. We use BitTitan, ShareGate, and custom PowerShell for seamless coexistence during transition.
EPC Group provides Microsoft Exchange support for Exchange Online, on-premises Exchange Server, and hybrid configurations. Services cover troubleshooting, migration to Exchange Online, security hardening, and 24/7 enterprise support. We have supported Exchange environments since Exchange 5.5 — across 11,000+ enterprise engagements.
Exchange Online is the email component of Microsoft 365. Our support covers configuration, security, compliance, and troubleshooting for Exchange Online environments of all sizes.
We support Exchange 2016 and Exchange 2019 on-premises environments. As Exchange Server approaches end of support, we also plan and execute migrations to Exchange Online.
Hybrid Exchange lets on-premises Exchange and Exchange Online operate together during migration. Users in both environments can see each other's calendar availability and receive mail at the same domain.
EPC Group migrates Exchange Server environments to Exchange Online using three migration methods, depending on organization size and timeline.
Secure Exchange Online requires active configuration — not just subscription.
p=reject to prevent domain spoofing in phishing attacks.We provide Exchange Online troubleshooting, on-premises Exchange Server support, hybrid configuration management, migration to Exchange Online, and Exchange security hardening. Support is available 24/7 for enterprise clients. We have supported Exchange environments from Exchange 5.5 through the current Exchange Online service in Microsoft 365.
Yes, for most organizations. Exchange 2019 mainstream support ends in 2025 (extended support through 2029).
Exchange Online provides always-current security updates, no on-premises infrastructure cost, built-in Defender for Office 365 security, and 50 GB mailbox storage per user. EPC Group can project the TCO comparison for your specific environment.
Cutover migration (under 150 mailboxes): 1–2 weeks. Staged migration (150–2,000 mailboxes): 4–8 weeks. Hybrid migration (2,000+ mailboxes, phased): 8–16 weeks. Timeline depends on mailbox count, data volume, and organization readiness — not just technical configuration.
Hybrid Exchange connects your on-premises Exchange Server with Exchange Online so both environments operate simultaneously.
Users in both systems see each other's calendar availability, receive email at the same domain, and appear in a unified Global Address List. Hybrid is used during phased mailbox migrations — users are moved in waves rather than all at once.
Start with the Exchange admin center message trace to identify where delivery is failing. Check transport rules, connectors, and spam filter policies for rules that may be blocking or redirecting the message.
Verify DMARC, DKIM, and SPF are correctly configured for your sending domain. EPC Group provides Exchange troubleshooting support for complex delivery issues — call (888) 381-9725.
EPC Group provides 24/7 Exchange support for Exchange Online, hybrid, and on-premises environments. Call (888) 381-9725 or submit a support request.