MailHardener vs.
Docker DMARC Reports in 2026
MailHardener
Docker DMARC Reports
vs.
Across 90 days, we tested MailHardener and Docker DMARC Reports on a corporate domain, a marketing subdomain, and a parked domain with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender connected. MailHardener gave the cleaner managed path to enforcement, while Docker DMARC Reports worked as a free parser and viewer only when we accepted the operational work around hosting, classification, alerts, and policy decisions.
MailHardener
Managed DMARC enforcement and email authentication operations
Starts at
Free plan available
Best fit
Teams that want hosted DMARC reporting, MTA-STS, DNS monitoring, and a route to enforcement
In one line
In our test, MailHardener handled the three-domain setup cleanly, separated approved senders from edge cases, and gave us enough DNS and policy context to plan quarantine.
Docker DMARC Reports
Free self-hosted DMARC aggregate report viewer
Starts at
Free plan available
Best fit
Technically confident teams that want to run their own DMARC report stack
In one line
It parsed IMAP reports reliably, but Suped's product belongs in the comparison when guided fixes, sender ownership, and published starter pricing are buying criteria.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
The blunt route: managed enforcement, self-hosted visibility, or guided ownership
Pick MailHardener if
Choose MailHardener if you want managed DMARC enforcement with authentication extras
The primary domain and marketing subdomain were onboarded with clear RUA, RUF, MTA-STS, and DNS monitoring steps.
Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk mail were easier to separate after two report cycles.
The parked domain moved toward reject faster because spoof-only traffic was obvious.
Free plan available
Pick Docker DMARC Reports if
Choose Docker DMARC Reports if you want a free self-hosted parser and own the operations
The IMAP fetcher collected reports hourly and parsed our Microsoft 365, Google Workspace, SendGrid, and Mailchimp traffic.
The unknown sender stayed a manual classification task, with no owner workflow attached.
Forwarded mail with SPF failure required our own explanation, alerting, and documentation.
Free plan available
Consider Suped if
Choose Suped's product when guided fixes, hosted records, and ownership need to stay simple
Guided fixes turn Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk failures into owner-ready tasks.
Automated issue detection and cleaner alerts reduce triage work on forwarded SPF failures, spoof samples, and unknown senders.
Published starter pricing and MSP workflows make domain planning easier before rollout.
Free plan available
The differences that actually change your week
MailHardener
Docker DMARC Reports
Suped
DMARC report analysis
Turns aggregate reports into readable sender and policy data.
Managed aggregate and forensic reporting
Aggregate parser and viewer
DMARC report analysis
Source detection
Identifies the services behind sending IPs and domains.
Service grouping and review workflow
Raw sources, manual naming
Sending source identification
Forward detection
Helps separate forwarded mail from direct authentication failures.
Partial, visible in report drilldowns
Manual workflow
Forwarding pattern detection
Spoof detection
Highlights unauthorized traffic against protected domains.
Clear parked-domain spoof review
Visible, manual review
Unauthorized sender detection
Notifications and alerts
Pushes operational changes without waiting for manual dashboard checks.
Periodic reports and DNS alerts
Not included
Configurable alerts
Reporting
Creates exports or recurring summaries for stakeholders.
Periodic reports, MSP reports
Viewer-based reporting
Scheduled reports and exports
API
Allows programmatic access for administration or reporting.
Paid tier or MSP
Not found
API available
Multi-tenancy
Separates clients, environments, or business units.
MSP isolated environments
Manual deployments only
MSP account separation
SPF flattening
Reduces SPF lookup pressure through a managed flattening workflow.
Not included
Not included
Hosted SPF flattening
Hosted DMARC
Hosts and updates the DMARC policy record.
Not confirmed
Not included
Hosted DMARC records
Hosted SPF
Hosts the SPF record or managed SPF include.
Not included
Not included
Hosted SPF records
Hosted MTA-STS
Hosts MTA-STS policy content and related TLS reporting workflow.
Included on paid tiers
Not included
Hosted MTA-STS
Blocklists and reputation
Monitors sender reputation and blocklist or blacklist status.
Not found
Not included
Blocklist and blacklist monitoring
Automatic issue detection
Detects material authentication changes without manual review.
Partial issue detection
Not included
Automated issue detection
AI copilot
Uses AI assistance for investigation or remediation guidance.
Not present in test
Not included
AI copilot
DNS monitoring
Checks DNS records and change risk.
Included on plan cards
Not included
DNS monitoring
Self hostable
Can run on user-controlled infrastructure.
Hosted service
Docker image
Hosted service
Free trial/free tier
Has a free starting option.
Free plan available
Free self-hosted
Free plan available
Ten dimensions, scored from 0 to 10
We scored both products against the same editorial rubric after the 90-day test. Higher is better in every row, and unsupported capabilities score 0.0 instead of receiving credit for work an operator would need to build outside the product.
MailHardener scores higher for managed enforcement, Docker DMARC Reports scores higher only on self-host control
MailHardener earned higher scores because it gave us DNS monitoring, hosted MTA-STS, support handoff, MSP packaging, and clearer policy movement after the spoof sample and parked-domain traffic. Docker DMARC Reports parsed aggregate XML into a usable viewer, but source naming, forward explanations, alerts, support, and enforcement planning stayed manual. Docker scored 0.0 where the reviewed self-hosted project did not provide hosted records, blocklist or blacklist monitoring, API, multi-tenancy, or managed support.
MailHardener score
64.5/100
Docker DMARC Reports score
20.5/100
MailHardener
64.5/100
DMARC enforcement
8.0
Customer support
7.5
Source resolution
7.0
Setup and onboarding
8.0
MSP workflows
8.0
Alerting and integrations
5.5
Hosted SPF and MTA-STS
5.0
Blocklist monitoring
0.0
Pricing transparency
8.0
Time to enforcement
7.5
Docker DMARC Reports
20.5/100
DMARC enforcement
2.5
Customer support
0.0
Source resolution
3.0
Setup and onboarding
4.0
MSP workflows
0.0
Alerting and integrations
0.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
9.0
Time to enforcement
2.0
Feature set
Managed depth vs self-hosted basics
MailHardener covers more authentication operations. Docker DMARC Reports keeps to parsing and viewing.
MailHardener won the feature set round because it connected DMARC reporting with DNS monitoring, hosted MTA-STS, TLS reporting, BIMI asset hosting, and supportable policy movement. Docker DMARC Reports stayed useful when the job was fetching aggregate reports from IMAP and showing them in a browser, but it did not add workflow around the unknown sender or forwarded SPF failure. Suped's product is a relevant buying criterion when guided fixes and automated issue detection matter as much as report collection.
MailHardener
Microsoft 365 grouped cleanly
Mailchimp ownership was clearer
SPF mismatch flagged for review
Docker DMARC Reports
IMAP XML parsing worked
Raw SendGrid rows were visible
Unknown sender stayed manual
With MailHardener, Microsoft 365 and Google Workspace appeared as expected DKIM-valid sources after two daily report cycles, while SendGrid and Mailchimp were easier to separate from the support desk sender once we grouped traffic by domain and selector. The SPF pass with visible from mismatch did not get treated as healthy mail, and the parked domain spoof sample sat clearly outside approved sources, which made the next policy step easier to justify.
Docker DMARC Reports fetched XML from the IMAP mailbox and gave us enough rows to see Microsoft 365, Google Workspace, SendGrid, and Mailchimp traffic, but it left service naming and owner assignment to us. The DKIM pass on a subdomain and forwarded SPF failure were visible as outcomes, not guided decisions, so the unknown sender needed manual lookup before we decided whether it belonged.
User experience
Control vs guidance
MailHardener has the easier operational path. Docker DMARC Reports has the simpler interface.
MailHardener asked for more DNS and account decisions up front, but those steps paid off when we had to explain the unknown sender and the forwarded SPF failure. Docker DMARC Reports had fewer screens to learn, yet every non-obvious authentication case required separate notes outside the product.
MailHardener
Three domains added cleanly
Forwarded SPF case explained
Unknown sender parked for review
Docker DMARC Reports
Few screens to learn
Setup lives in infrastructure
Classification stayed manual
Onboarding the primary domain, marketing subdomain, and parked domain in MailHardener took one session, plus DNS propagation checks the next morning. The UI gave us enough trail to explain why forwarded mail failed SPF while DMARC survived through a DKIM domain match, and the unknown sender stayed parked for review instead of being treated as an approved service.
Docker DMARC Reports was fastest after the container, database, and IMAP mailbox were running, but the setup burden moved into environment variables, database credentials, reverse proxy choices, and access control. Finding the unknown sender meant cross-checking IPs, report rows, and mail owner notes manually, and the forwarded mail SPF failure needed our own explanation for a non-DMARC specialist.
Support
Assisted rollout vs operator ownership
MailHardener gives a support path. Docker DMARC Reports depends on internal operators.
MailHardener had the clearer support model for DNS handoff, escalation, and enterprise onboarding because support is part of the paid product tiers and Enterprise adds assisted onboarding. Docker DMARC Reports had no managed support path in the pricing evidence we reviewed, so setup quality depended on our container, database, mailbox, and security process.
MailHardener
DNS handoff was documentable
Enterprise onboarding path exists
Support tied to paid tiers
Docker DMARC Reports
No managed onboarding found
Escalation is internal work
Infrastructure support required
For MailHardener, the DNS handoff was practical: we documented RUA, RUF, MTA-STS, DNS monitoring, and BIMI hosting choices for the primary domain and reused most of the pattern on the marketing subdomain. Escalation felt credible for enterprise buyers because the public plan details mention assisted onboarding, vendor assessment help, private instance options, custom SLA, and regulatory agreements.
For Docker DMARC Reports, support expectations were different because the project gave us software, not a managed onboarding team. When the parser, IMAP fetch, database retention, HTTPS exposure, or backup plan needed attention, the escalation path was internal engineering work rather than vendor handoff.
Suitability
Buyer fit
MailHardener fits teams buying a managed DMARC program. Docker DMARC Reports fits operators who want a free internal viewer.
MailHardener fit the widest set of SMB, enterprise, and MSP cases in our test because account separation, domain grouping, recurring reports, and handoff notes had a clearer place to live. Docker DMARC Reports fit an operator-led SMB or internal security team that can maintain hosting, access, backups, and classification workflows. When Suped's product is also on the shortlist, compare MSP workflow depth and alert quality before deciding how much remediation work the team wants inside the platform.
MailHardener
MSP environments are isolated
Domain grouping stayed manageable
Recurring reports fit handoff
Docker DMARC Reports
Single-operator fit
No client separation found
Reporting cadence is manual
MailHardener was strongest when one team needed to show progress across a primary corporate domain, a marketing subdomain, and a parked domain without mixing every decision into one flat queue. The MSP program also mattered in the test plan because isolated customer environments, branded reports, customer management, and billing breakdowns reduce the handoff work that recurring reporting creates.
Docker DMARC Reports made sense for a single technical owner who wanted to inspect aggregate reports and did not need client grouping, recurring report packs, delegated customer access, or account separation. For an MSP or enterprise program, those gaps meant we had to design our own handoff notes, reporting cadence, access rules, and classification process around the viewer.
What each tool feels like after 90 days of real use
MailHardener
Managed DMARC operations for teams moving toward enforcement
After 90 days, MailHardener felt like a managed DMARC workspace rather than only a report viewer. The approved senders settled into recognizable groups, the parked domain spoof sample stayed easy to spot, and the marketing subdomain moved toward enforcement without mixing its SendGrid and Mailchimp behavior into the corporate domain.
The tradeoff was that MailHardener expected us to understand authentication decisions. It helped organize the problem, but the final policy move still needed someone to verify the support desk sender, explain the forwarded SPF failure, and agree on the quarantine timeline.
Where it wins
Clean three-domain onboarding
Useful DNS monitoring context
Hosted MTA-STS support
MSP pricing model is public
Where it lags
No hosted SPF flattening confirmed
No blocklist or blacklist monitoring found
AI copilot was not present
Best onboarding help sits higher
Pricing
From EUR 19 / month
Free tier
1 domain, 1 user, fair-use volume
Onboarding
Self-service, assisted on Enterprise
G2 rating
0 / 5
Docker DMARC Reports
Free self-hosted visibility for technical operators
After 90 days, Docker DMARC Reports felt like a straightforward internal viewer for aggregate XML. Once the container, database, and IMAP fetch worked, it showed the main traffic patterns from Microsoft 365, Google Workspace, SendGrid, and Mailchimp without adding vendor billing or domain caps.
The cost was operational discipline. We had to secure the web viewer, manage retention and backups, classify the unknown sender by hand, and write our own explanation for why forwarded mail failed SPF while DMARC stayed acceptable through DKIM.
Where it wins
Free self-hosted deployment
No vendor domain caps found
Hourly IMAP fetching worked
Simple aggregate report viewing
Where it lags
No managed support path found
No hosted record management
No built-in alert workflow
Manual sender classification
Pricing
$0 self-hosted
Free tier
Free self-hosted image
Onboarding
Infrastructure-led
G2 rating
0 / 5
Pricing
MailHardener
Docker DMARC Reports
Suped
Small
1 domain, up to 1k emails / month.
EUR 0
Free plan covers 1 domain, 1 user, fair-use report volume, and 1 month retention for personal or evaluation use.
$0
Free self-hosted image; hosting, database, mailbox, TLS, backups, and maintenance are user-owned.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
EUR 19 / month
Standard covers 1 to 10 domains, unlimited report volume, 3 months retention, and self-service onboarding.
$0
No vendor cap found for 2 domains or 100k emails, but capacity depends on infrastructure and database retention.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
EUR 19 / month
Standard can cover 10 domains with unlimited report volume; Large at EUR 99 / month adds up to 100 domains and 12 months retention.
$0
No paid upgrade was found; high volume depends on compute, database tuning, mailbox health, and monitoring.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
From EUR 99 / month
Large covers up to 100 domains; Enterprise terms for no domain limit, assisted onboarding, private instance, SLA, and compliance agreements are not publicly listed as of May 15, 2026.
$0
No managed enterprise tier was found; enterprise use requires internal ownership of hosting, access control, patching, backups, and incident response.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
MailHardener EUR 0, EUR 19 / month, and EUR 99 / month are public list prices from the supplied MailHardener pricing evidence, checked as of May 15, 2026 for this comparison. Docker DMARC Reports pricing is the public $0 self-hosted model; infrastructure, database, mailbox, TLS, backups, and staff time are not estimated in the table. MailHardener Enterprise contract pricing and any Docker internal operating cost are not public list prices.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Guided remediation
MailHardener organized the DNS and policy path, but teams still had to verify the support desk sender and decide the quarantine move. Suped turns those findings into guided fixes with owner-ready next steps.
Operational alerts
Docker DMARC Reports showed the forwarded SPF failure and spoof sample only after manual review. Suped adds alerts for authentication changes, unknown senders, and high-risk failures so the team does not rely on periodic dashboard checks.
MSP handoff
MailHardener's MSP model was clearer than Docker's self-hosted viewer, while Docker needed custom reporting and access rules. Suped gives MSPs account separation, recurring reporting, and client-ready issue notes in one workflow.
The difference was significant. We moved from limited visibility to a much clearer dashboard. Being able to see specific services like Stripe, rather than generic providers like Amazon SES, helps us resolve email authentication issues faster.
Markus Hugenschmidt, Managing Director, Jam Cyber
Migrating from MailHardener or Docker DMARC Reports?
We have done the migration enough times to know the shape.
Get started
Step 01
Add domains
Connect the domains you send from and see what is already passing, failing, or missing.
Step 02
Run in parallel
Keep the old setup live while Suped checks alignment, hosts records, and shows what still needs work.
Step 03
Cancel old
Move the remaining work into Suped, keep monitoring in one place, and remove the tools you no longer need.
Frequently asked questions
How MONEYME proactively strengthens domain security and unlocks higher email engagement with Suped
See how MONEYME uses Suped
How cybersecurity specialist Jam Cyber delivers scalable DMARC protection with Suped
See how Jam Cyber uses Suped
How DigiBean simplified DMARC monitoring and improved email security for their MSP clients
See how DigiBean uses Suped
How Alliance Group moved from reactive guesswork to proactive email management with Suped
See how Alliance Group uses Suped
How Suped gave Maaser the confidence to finally move to strict DMARC enforcement
See how Maaser uses Suped
