LevelBlue cloud email security is delivered through the MailMarshal (SEG) Cloud platform.
Please Select A Mode
MailMarshal Cloud is available in Gateway and Integrated modes. To see the appropriate documentation, please select the service mode you have purchased.
Gateway Configuration Settings
The information linked here may be useful to email or network administrators.
HOWTO: Add a TXT Record to verify your domain
- MailMarshal Cloud Connection Details
Includes the following:
- IP address range to allow for incoming mail from MailMarshal Cloud to customer servers
- Inbound MX record
- Outbound delivery address for mail sent by customers
- SPF record text to include
FAQ
Knowledge Base
Browse recent articles and search for information about MailMarshal Cloud in the MailMarshal Cloud Knowledge Base.
Documentation
Provisioning
- MailMarshal Cloud Pre-Provisioning Guide A guide to configuration tasks that new customers must complete before provisioning of their MailMarshal Cloud account can be completed.
(Updated August 2020. Note required User Registration.) - MailMarshal Cloud Quick Start Guide A guide to initial configuration tasks that new customers should consider when preparing to use MailMarshal Cloud.
(Updated March 2026: DKIM and SPF are required to ensure other servers accept mail. Previous change: policy hardening recommendations.)
Mailbox Server Configuration
- Using MailMarshal Cloud with Exchange Online Provides information about how to configure MailMarshal Cloud
as an email security layer with mailboxes hosted on Microsoft Office 365® (Exchange Online).
(Updated August 2024: Entra Connector and Enanced Filtering for Connectors.) - Using MailMarshal Cloud with Google G Suite Email Provides information about how to configure MailMarshal Cloud
as an email security layer with mailboxes hosted on Google G Suite Email.
See also MailMarshal Connector Agent for Google Workspace LDAP - Using MailMarshal Cloud with Microsoft Exchange Server Provides information about how to configure MailMarshal Cloud as an email security layer with mailboxes hosted on Microsoft Exchange Server (premises editions).
(Updated June 2019 for MailMarshal Cloud regional instances.)
Policy and Usage
- MailMarshal Cloud Customer Guide A guide to tasks in the MailMarshal Cloud Customer Web Interface
(November 2024: Updates to available rules.) - MailMarshal Cloud Policy Listing This document provides detail of the policy and feature configuration available to MailMarshal Cloud customers.
Use this listing along with the MailMarshal Cloud Customer Guide to understand the available features and functions of MailMarshal Cloud.
(Updated March 2026: Suspect File rule enhancements, Ignore DANE, Rule Condition negation options, Email Bombing block.) - MailMarshal Cloud BEC Fraud Protection This document provides brief background information about Business Email Compromise (BEC) email fraud, and details of basic steps that MailMarshal Cloud customers can and should follow to set up basic protection against BEC Fraud.
(Reviewed July 2026.) - MailMarshal Connector Agent for Google Workspace LDAP Covers how to set up the Connector Agent to connect and retrieve group information from GWS.
Integrated Configuration Settings
The information linked here may be useful to email or network administrators.
- MailMarshal Cloud Connection Details
FAQ
Knowledge Base
Browse recent articles and search for information about MailMarshal Cloud in the MailMarshal Cloud Knowledge Base.
Provisioning
- MailMarshal Cloud Pre-Provisioning Guide (Integrated) A guide to configuration tasks that new customers must complete before provisioning of their MailMarshal Cloud account can be completed.
(May 2025: Initial Integrated Mode release.) - Enabling Mailflow from M365 to MailMarshal Cloud (Integrated Mode) A guide to configuration tasks that new customers must complete in Microsoft 365 to enable MailMarshal Cloud scanning of messages.
(May 2025: Initial Integrated Mode release.) - MailMarshal Cloud Quick Start Guide (Integrated Mode) A guide to initial configuration tasks that new customers should consider when preparing to use MailMarshal Cloud.
(May 2025: Initial Integrated Mode release.)
Policy and Usage
- MailMarshal Cloud Customer Guide (Integrated Mode) A guide to tasks in the MailMarshal Cloud Customer Web Interface
(May 2025: Initial Integrated Mode release.) - MailMarshal Cloud Policy Listing This document provides detail of the policy and feature configuration available to MailMarshal Cloud customers.
Use this listing along with the MailMarshal Cloud Customer Guide to understand the available features and functions of MailMarshal Cloud.
(Updated March 2026: Suspect File rule enhancements, Rule Condition negation options, Email Bombing block.) - MailMarshal Cloud BEC Fraud Protection This document provides brief background information about Business Email Compromise (BEC) email fraud, and details of basic steps that MailMarshal Cloud customers can and should follow to set up basic protection against BEC Fraud.
(Updated November 2022 with updated background information)
Modules and Advanced Functions
- MailMarshal Cloud Spam Quarantine Manager A quick reference for the end user Spam Quarantine Manager.
(Reviewed March 2026: Update for the new look SQM and new features.) - MailMarshal Cloud Digest A quick reference for the end user spam digest.
- MailMarshal Cloud Blended Threats FAQ Provides more details of the MailMarshal Cloud Blended Threats solution.
(Updated July 2026.) - MailMarshal Cloud Blended Threats Results Explains the various results from URL scanning using the Blended Threats feature of MailMarshal Cloud.
(Reviewed January 2026.)