Legitimate client emails end up in quarantine when the filtering is too aggressive or has not yet learned to trust a sender. The fix is to tune the filtering, safelist your known good senders, and review quarantine quickly, so real client email gets through while genuine threats stay blocked. For a firm whose business runs on client communication, getting this balance right matters.
Quarantine is doing its job by holding suspicious mail, but it should not be holding the emails you need. Here’s how we keep it accurate.
1. Why good email gets caught
Filtering scores each message on many signals. A new sender, an unusual attachment or a strict setting can push a genuine email over the line. It is a sign the filter is cautious, which is good, but it needs tuning so it is accurate.
2. Safelist your known good senders
Your regular clients, partners and key contacts can be trusted so their email is delivered reliably. We set this up so the people you deal with every day do not keep getting held back.
3. Tune the filtering
We adjust the filtering so it catches real threats without being so strict that it blocks legitimate business. It is a balance, and we manage it for you rather than leaving you to fight the quarantine.
4. Review and release quickly
When something important is held, it should be released fast. Our helpdesk handles quarantine queries quickly, so a delayed client email is a minor blip, not a lost deal.
A real example: client emails flowing again
We supported a technology firm serving financial trading firms where critical customer emails were being held by the quarantine filter. We resolved it within 24 hours and tuned the filtering so legitimate client communications flowed while threats stayed blocked. As the user put it: “The issue was solved within 24 hours.”
For most technology and trading firms, this sits within fully managed IT at about £45 to £100 per user per month, billed per user, with the security and resilience these businesses rely on built in.
Why technology and trading firms choose First Stop IT
First Stop IT has supported businesses since 2002, including software and technology companies and firms that serve financial markets. We know the systems these teams depend on: secure VPN and remote access, source control and build pipelines, virtual dev and test environments, Microsoft 365 and Teams, and the security that banks and regulators expect, from multi-factor authentication and endpoint protection to application allowlisting and email security. We work with technology and trading firms in London and across Essex and Hertfordshire. Our credentials include:
- Cyber Essentials Certified
- IASME Cyber Assurance (Gold)
- NCSC Assured Service Provider (Cyber Advisor for Cyber Essentials)
- Microsoft Partner
- Crown Commercial Service Supplier (G-Cloud)
- Quality Principles Certified
We look after more than 2,000 endpoints across 50 companies, we’ve been named a Top 50 UK MSP for three years running, and we support organisations with 10 to 100 employees across Essex, Hertfordshire and London, including Harlow and Bishop’s Stortford.
Book a free IT and cyber security review
Losing real emails to quarantine? Book a free IT and cyber security review with First Stop IT and we’ll get the balance right.