PRODUCT UPDATES
What’s new
Each release is organized into Performance, Security and Design. Older release notes describe how the product worked at the time. Later releases may change that behavior.
Current release: v4.9.270. Latest release: .
v4.9.170 · Delivered text and quarantine retention
Performance
Delivered headers and attachment-free text retained for 90 days after destination acceptance.
Security
Quarantine retention is configurable from 1 to 14 days under administrator limits.
Design
Authorized delivered text and retention controls.
v4.9.169 · Classified retention maintenance
Performance
Classified cleanup separates operational, audit and destruction records.
Security
Added safe security and administrative event context.
Design
No separate change recorded in this category.
v4.9.168 · Operational retention rollout
Performance
Introduced scheduled operational retention maintenance.
Security
Retention coverage includes operational records and native log settings.
Design
No separate change recorded in this category.
v4.9.167 · Optional greylisting
Performance
No separate change recorded in this category.
Security
Protected-domain greylisting controls with package, authenticated-sending and local-notification bypasses.
Design
Administrator defaults and eligible domain overrides.
v4.9.166 · Domain diagnostic tools
Performance
Bounded SPF policy analysis and separate MX tests.
Security
Public-target checks retain scope, rate limits and explicit unknown results.
Design
MX reverse DNS, SMTP/blocklist controls and colored SPF explanations.
v4.9.165 · Delivery history cards
Performance
No separate change recorded in this category.
Security
Preserved recipient and tenant scope; historical records do not gain release actions.
Design
Responsive summary rows, status colors and working View/Close controls.
v4.9.164 · Expanded rule descriptions
Performance
No separate change recorded in this category.
Security
Recorded signals receive descriptions from the deployed rule configuration; absence is not proof a check ran.
Design
Quarantine and delivery details share the description catalog.
v4.9.163 · Shared rule-result presentation
Performance
No separate change recorded in this category.
Security
Unknown rule descriptions are explicitly unavailable.
Design
Score, Rule and Rule description columns shared with Delivery history.
v4.9.162 · Shared quarantine workspace
Performance
No separate change recorded in this category.
Security
Authorized text-only previews preserve release and rescan restrictions.
Design
Summary rows, View/Release/Delete controls and bold red quarantine reasons.
v4.9.161 · Quarantine callback scheduling
Performance
Admission runs after the quarantine decision so quota classification can occur.
Security
Security decisions run before admission.
Design
No separate change recorded in this category.
v4.9.160 · Quarantine admission diagnostics
Performance
Improved forced-action admission observation and diagnostic markers.
Security
Stronger rejection decisions remain preserved.
Design
No separate change recorded in this category.
v4.9.159 · Mailbox quota overflow
Performance
Personal quota overflow remains held for IT instead of interrupting reception solely for that quota.
Security
Personal accounts cannot access IT-only overflow messages.
Design
Quota warning emails explain cleanup and IT review.
v4.9.158 · Mailbox domains and aliases
Performance
No separate change recorded in this category.
Security
Transactional primary/alias uniqueness checks, ownership validation and shared account scope.
Design
Domain selection, alias management and centered error dialogs.
v4.9.157 · Quarantine deployment repair
Performance
Corrected the mailbox-policy map deployment path and service startup recovery.
Security
Preserved service sandboxing and rollback coverage.
Design
No separate change recorded in this category.
v4.9.156 · Personal mailbox quarantine
Performance
No separate change recorded in this category.
Security
Independent mailbox sign-in, scoped release permissions and fresh antivirus rescans.
Design
IT-managed users, quotas and new-message summaries.
v4.9.155 · English-only pages and readable layouts
Performance
No separate change recorded in this category.
Security
No separate change recorded in this category.
Design
Removed Turkish page variants; improved information cards, responsive preview layouts and WhatsApp presentation.
v4.9.154 · Upgrade backup manifest repair
Performance
Upgrade validates absolute backup paths before stopping services.
Security
New security-result modules are included in rollback coverage.
Design
No separate change recorded in this category.
v4.9.153 · Product and technical guides
Performance
No separate change recorded in this category.
Security
Product pages explain supported protection and service boundaries.
Design
Added integration, technology, lifecycle and portal-preview pages.
v4.9.152 · Recorded message security results
Performance
No separate change recorded in this category.
Security
Delivery history exposes recorded authentication, spam and antivirus signals for authorized protected domains.
Design
Message details distinguish security decisions from destination SMTP results.
v4.9.151 · Authentication results in protected mail
Performance
No changes were recorded in this category.
Security
- Protected inbound messages now receive Authentication-Results from native SPF, DKIM and DMARC checks. Backup MX bypass, local notification handling and SMTP device identity privacy are preserved. Existing custom header configurations are not silently overwritten.
Design
No changes were recorded in this category.