1. Pre-Onboarding Preparation
- Collect Technical Information
- Mail flow architecture (e.g., M365, Google Workspace, Exchange, Zimbra, Zoho and etc.)
- Existing DNS records (MX, SPF, DKIM, DMARC)
Internet -> MX -> Email Gateway or Mail Server
dig mx sorbsecurity.com
dig txt sorbsecurity.com
dig txt _dmarc.sorbsecurity.com
dig txt mail._domainkey.sorbsecurity.com
- Backup & Rollback Plan
- Backup existing mail routing settings.
- Define rollback steps in case of mail flow disruption.
2. Environment Preparation
- Access & Permissions
- Admin console access (Exchange Admin Center, Google Admin, Zimbra and etc.).
- Access to DNS hosting provider.
- Whitelist/Allowlist Requirements
- Add required IP ranges for connection and spam filtering
- Update firewall rules(On-Premise Only)
- Connector & Routing Validation
- Confirm current mail flow (inbound/outbound paths).
- Identify any existing 3rd-party filters.
3. DNS & Email Outbound
- Configure & Validate SPF record
- Generate and publish DKIM keys
- Create or update DMARC policy (
none
, quarantine
, or reject
) with reporting addresses
For SPF,
dig txt sorbsecurity.com
For DKIM,
Go to Admin Portal, Mail Routing | Outbound DKIM Config
For DMARC,
_dmarc.sorbsec.com. 300 IN CNAME _dmarc.sorbsecurity.com.
4. Policy & Rule Configuration
- Set up Inbound and Outbound configuration on Mail System
- Configure Inbound and Outbound on Sorb Security SCES
- Email Firewall
- Outbound Throttling, whitelist the massive sender email addresses
- Mail Routing
- Inbound, configure next relay from the original MX record
- Outbound, configure the source IP of Mail Server
- Outbound Special Route, whitelist massive sender email addresses
- Content Security
- AntiSpam, configure the threshold to 70(recommendation)
- Attachment Protection
- Phishing Protection
- Setup administrations on Sorb Security SCES
- Administration
- Timezone, change to the local timezone
- Quarantine Notification, enable notification and customize the sender domain
Note:
For Inbound MX, configure with these,
mx1-sces.sorbsecurity.com
mx2-sces.sorbsecurity.com
For Outbound Relay, configure with these,
smarthost1-sces.sorbsecurity.com
smarthost2-sces.sorbsecurity.com
Details refer to the article.
6. Testing & Validation
- Test Inbound / Outbound email flow
- Verify SPF / DKIM / DMARC headers
- Test failover or mail continuity (if applicable)
7. Monitoring & Reporting
- Monitor dashboards and logging
- Schedule automated reports (daily/weekly/monthly) at Administration | Report
- Configure alerts for compromised accounts, high-risk attachments, and DMARC failures