How Can CRM Features Boost Your Team's Productivity?
Exploring how CRM features can significantly enhance your team's productivity by optimizing workflows and improving customer interactions.
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2026-09-01
Solution example Security
A spam filter in front of the company mail: 30–80 mailboxes protected
Proxmox Mail Gateway stops spam, phishing and infected attachments before they reach the mail server; staff release false positives themselves.
- Client
- Typical client: company with 30–80 mailboxes
- Timeline
- 2–4 days
- Year
- 2026
1 284
spam blocked this week
37
phishing attempts stopped
30–80
mailboxes behind one filter
1×
daily quarantine report
0
changes to existing mailboxes
This is a solution example: it shows how we would build it for a typical client. The figures are targets we agree on before the work starts, not results of a specific client.
Before and after
BeforeAfter
Spam in inboxesBefore Dozens a day per personAfter Stopped at the gateway
Infected attachmentsBefore Reach people's computersAfter Blocked before delivery
False positivesBefore Disappear without a traceAfter Released from the daily report
The problem
Dozens of spam letters a day per person, fake invoices with macros, and nobody knows what the mail server actually lets through.
How we solve it
- 01Proxmox Mail Gateway in front of the existing mail server — mailboxes stay as they are
- 02Antivirus, attachment rules and blocking of macro documents
- 03Daily quarantine report: each person releases their own letters
- 04SPF, DKIM and DMARC checked and aligned
How it works
In
Incoming mailProxmox Mail Gateway
Spam, virus and attachment rules
Result
Clean mail to the serverQuarantine reportHow the work goes
- 11 day
Audit
DNS records, mail route and current spam level.
- 21–2 days
Gateway
Installation, rules, quarantine and MX switch at a quiet hour.
- 3first 2 weeks
Tuning
Rules adjusted on real mail, staff shown the quarantine report.
What the client gets
- Spam and phishing stop before reaching inboxes
- No false positive is lost — it waits in quarantine
- Statistics on what was blocked and why
Technologies
- Proxmox Mail Gateway
- ClamAV
- SpamAssassin
- SPF / DKIM / DMARC
Related services
What we need from you
Everything else is on us. You see progress after each stage and pay after accepting it.
- Access to DNS and the mail server
- A list of partners whose mail must always pass
- A 15-minute window to switch MX records
Want the same for your business?
Describe the task in your own words. We'll reply with questions or a plan and name the price and deadline before we start.
More cases
All cases →mail-check tansecure.com
- SPF ✓ pass
- DKIM ✗ missing → ✓ signed (s=mail)
- PTR ✗ mismatch → ✓ matches HELO
- Relay ✗ open for gmail.com → ✓ closed
- DMARC ✓ p=quarantine
- mail-tester: 9/10 → 10/10
Our project Security
Replies stopped landing in spam: mail-tester 9/10 → 10/10
Gmail put our replies to clients into spam. We found three causes in the mail chain and fixed them in a day.
10/10mail-tester score
Read the casescan shop.example.com
- wp-content/uploads/x.php ✗ backdoor
- users: admin2 (fake) ✗ removed
- redirect → casino.* ✗ removed
- plugins outdated: 7 ✓ updated
- firewall + 2FA ✓ on
- Google warning: review requested
Solution example Security
Hacked store: cleaned, closed and back in Google within days
Redirects to spam sites, a red warning in Chrome and lost orders. We remove the malicious code, close the hole and ask Google to lift the warning.
same daywe start the cleanup
Read the case- SPF · aligned
- DKIM · signed
- DMARC · p=reject
- 2FA · 12 of 12 people
Solution example Security
Fake invoices and “boss” emails no longer get through
DMARC in reject mode, warnings on look-alike domains, 2FA for everyone and a 30-minute training with real examples from your inbox.
p=rejectDMARC policy
Read the case
