Overview

Important messages may arrive late, disrupting communication with clients, vendors, and internal teams.

Symptoms

• Users report inconsistent or failed access to the affected service, device, or application.
• Normal business or home workflows are interrupted, delayed, or no longer reliable.
• The issue may be isolated to one user or may affect multiple systems depending on the root cause.

Cause

Reputation problems, provider throttling, DNS issues, security gateways, and connector configuration errors can delay delivery.

Resolution

Check mail queues, review logs or traces, verify sender reputation, and confirm whether delays are limited to specific domains or message types.

1. Confirm the exact symptoms and identify who or what is affected.
2. Check for recent changes such as updates, password changes, hardware swaps, DNS changes, or policy adjustments.
3. Test the most likely root cause first and document all findings clearly.
4. Apply the corrective action in the least disruptive way possible and verify the issue is fully resolved.
5. Record the final outcome, any user communication, and any recommended follow-up work.

Prevention

Monitor mail flow regularly and review connectors, filtering policies, and DNS records after platform changes.

When to Contact Support

If the issue continues after standard troubleshooting, affects multiple users, involves data loss risk, or raises security concerns, it should be escalated to a qualified technician promptly.