Proofpoint expertise for complex enterprise email environments.
Practical, hands-on consulting to help you design, configure, optimize and troubleshoot your Proofpoint environment with confidence.
Expertise across Proofpoint Email Security implementations, integrations and ongoing technical support.
- Architecture and deployment
- Policy configuration and optimization
- Microsoft 365 integration
- Troubleshooting and issue resolution
What we help you solve
We work with IT, security and messaging teams to resolve real-world challenges across Proofpoint and hybrid email environments.
Mail flow and routing issues
Investigate delayed, rejected or incorrectly routed messages across Proofpoint, Microsoft 365 and connected mail systems.
Authentication and deliverability
Review SPF, DKIM, DMARC, TLS and sender-reputation issues affecting email delivery and policy enforcement.
Policy configuration and tuning
Review and refine spam, malware, URL, attachment, content and organizational policies without unnecessarily disrupting legitimate mail.
Microsoft 365 integration
Review Proofpoint and Exchange Online connectors, routing, accepted domains and hybrid mail-flow configurations.
False positives and false negatives
Investigate legitimate messages being blocked or quarantined and malicious messages bypassing expected controls.
Operational troubleshooting
Use message tracking, logs, SMTP responses and configuration evidence to isolate and resolve complex email security issues.
Typical Proofpoint architecture
Representative mail-flow examples showing how Proofpoint can integrate with Microsoft 365. Actual routing varies by deployment.
and threats
Anti-spam and anti-malware
URL and attachment protection
Policy enforcement
Reputation and threat intelligence
(Exchange Online)Cloud Email
Platform
communication
submission
(Exchange Online)Cloud Email
Platform
Routing and relay validation
TLS policy enforcement
Authentication dependencies
Delivery troubleshooting
recipients
How we work
A structured approach to identify, resolve and validate issues in your Proofpoint environment.
Understand
Establish your mail-flow architecture, current configuration, requirements and observed issues.
Analyze
Review relevant Proofpoint logs, message tracking, SMTP responses, policies and connected-system evidence.
Remediate
Implement the required configuration, policy or routing changes with controlled updates.
Validate
Confirm expected mail flow, policy behavior and security controls after remediation.
Document
Provide findings, changes, validation results and recommendations where appropriate.
Example: Troubleshooting scenario
An illustrative example of how we analyze and resolve issues in a Proofpoint to Microsoft 365 mail flow.
- Environment
- Proofpoint → Exchange Online
- Symptom
- Intermittent outbound delivery failures
- Observed
- TLS handshake failed after STARTTLS was accepted
- Investigation
- Reviewed Proofpoint logs, SMTP conversation, TLS policy and Exchange Online connector
- Finding
- Certificate/hostname policy mismatch
- Resolution
- Updated configuration and validated successful mail delivery
2026-08-10 14:22:31 Info TLS connection to hygstmtp.global.example.com:25 2026-08-10 14:22:31 Info Certificate validation failed 2026-08-10 14:22:31 Warn Hostname mismatch 2026-08-10 14:22:31 Error TLS negotiation failed 2026-08-10 14:22:31 Info Returning temporary failure (451)
220 destination.example ESMTP EHLO proofpoint.example 250-STARTTLS STARTTLS 220 2.0.0 Ready to start TLS [TLS handshake begins] TLS certificate identity validation fails Connection closes before the SMTP session resumes
Expected host: hygstmtp.global.example.com Presented certificate: mail.global.example.com Validation: hostname mismatch Policy: certificate validation required
Finding: certificate/hostname policy mismatch Action: configuration corrected Validation: TLS negotiation successful Result: normal mail delivery restored
What you receive
Clear findings, practical recommendations and hands-on support appropriate to the scope of the engagement.
Detailed findings
Root-cause analysis and documented observations.
Configuration changes
Implementation assistance where required and agreed.
Validation results
Confirmation of expected mail flow and security behavior.
Technical documentation
Configuration notes, process documentation and recommendations.
Knowledge transfer
Walkthrough and guidance for your internal team where appropriate.
Frequently asked questions
Common questions about our Proofpoint consulting services.
What types of Proofpoint environments do you support?
We can support Proofpoint email security environments and integrations within the areas described on this page. Share your current architecture and requirement so the exact scope can be confirmed before engagement.
Can you review an existing Proofpoint configuration?
Yes. Reviews can focus on mail flow, policy configuration, integrations, authentication dependencies and operational issues relevant to your environment.
Can you troubleshoot Proofpoint and Microsoft 365 mail-flow issues?
Yes. This can include connector behavior, routing, SMTP responses, TLS, message tracking and configuration dependencies between Proofpoint and Exchange Online.
Can you help with SPF, DKIM and DMARC issues?
Yes, where those authentication controls relate to the email environment, routing, sender configuration or delivery problem being investigated.
Do you assist with policy tuning and false-positive investigations?
Yes. Policy review and troubleshooting can include unwanted blocking, quarantine behavior and messages bypassing the controls expected in your Proofpoint environment.
Do you provide implementation support or only recommendations?
Both can be considered. The engagement can be scoped for analysis and recommendations, hands-on implementation assistance, validation, documentation or a combination of these.
Need help with your Proofpoint environment?
Whether you need help with a specific issue, a configuration review or ongoing support, we can help you get the most out of your Proofpoint investment.
Discuss Your Requirement