Package 1 · Backup MX
Secondary MX, temporary queuing during destination outages and automatic delivery on recovery. No mailbox pre-check, AntiSpam, Antivirus, content inspection or quarantine.
TECHNICAL GUIDES
SecuraWall MailFlow Package Guides
Guidance for Backup MX in all packages, email protection in Package 2, and the optional SMTP Relay add-on.
Package 2 · Email Protection
Primary MX gateway with configurable AntiSpam, Antivirus, sender-domain checks and quarantine. Publish only gate.securawall.com and configure a separate manual receiving target. Queuing and recovery remain included.
Optional SMTP Relay add-on
Add authorized outbound delivery to either Package 1 or 2 for the same domain. Separate add-on pricing, approval, server credentials, quotas, TLS and verified SPF apply. Customer-domain DKIM signing is optional and recommended. Incoming protection remains determined by the base package.
Explore packages and add-ons
EXPLORE SECURAWALL
Understand, check and configure your mail route
Backup MX explained
Understand where secondary MX helps and the limits of temporary queuing.
Explore →Pricing & conditions
Review the current plan, message limits, renewal and deletion conditions.
Explore →Setup guide
Verify ownership and configure secondary MX and delivery safely.
Explore →Security details
Explore domain controls and the limits of message protection.
Explore →Free Domain Check
Inspect MX, TXT, SPF, NS and address records, or reverse DNS for an IP.
Explore →Technical guides
Practical guidance on mail routing, testing, queues and delivery errors.
Explore →Package selection and SMTP sending
Cloud mail and forwarding
Backup MX with Microsoft 365: Evaluate the Mail Flow
Check whether a secondary SMTP route fits your tenant and what receiving configuration must be validated.
Read guide →Backup MX with Google Workspace: Plan Before Adding MX
Evaluate secondary routing, forwarded-mail authentication and receiving policies without assuming universal compatibility.
Read guide →Backup MX, SPF, DKIM and DMARC
Why forwarded email can fail authentication, how sender rewriting helps and where its limits remain.
Read guide →DNS and mail routing
Troubleshoot Backup MX TXT Ownership Verification
Check the correct DNS zone, record name and current verification token before blaming propagation.
Read guide →Backup MX with Multiple Primary Mail Servers
Plan secondary routing for several legitimate primary destinations without loops or extra domain subscriptions.
Read guide →MX Priorities and Multiple Mail Servers
Understand preference numbers, equal-priority records and secondary MX placement.
Read guide →Choosing the right service
Cloud Backup MX: Choosing a Secondary Mail Exchanger
Evaluate a cloud-hosted backup mail exchanger for SMTP outages, maintenance and temporary queuing without replacing your mailboxes.
Read guide →Email Protection: Primary Gateway Routing
Use the only published MX to place configured protection before your receiving server.
Read guide →What Is Backup MX?
How a secondary MX queues incoming mail, where it helps and what it cannot replace.
Read guide →Backup MX vs Email Continuity
Choose temporary incoming-mail queuing or a broader outage workspace based on your real requirements.
Read guide →Testing and delivery operations
Queue Incoming Email During Mail Server Maintenance
Prepare a controlled maintenance window, verify backup routing and observe recovery without promising uninterrupted mailbox access.
Read guide →Backup MX Delivery Troubleshooting Checklist
Identify whether a delay comes from service state, DNS, routing, SMTP rejection or final mailbox handling.
Read guide →How to Test Backup MX Safely
Validate your own domain, queue behavior and recovery without treating an open port as successful delivery.
Read guide →Deferred vs Bounced Email: SMTP 4xx and 5xx
Read delivery errors without confusing temporary retry, permanent rejection and inbox placement.
Read guide →Backup MX Queue Retention and Deletion
Understand message age, expiry, paused delivery and permanent queue removal.
Read guide →