Email Security in Texas
Almost every loss we are called about started in a mailbox. Email security closes the common paths: convincing fakes of people your staff trust, attachments that detonate after delivery, and a domain anyone can forge because nobody published the records that would stop them. Sentinel-Pros configures and runs it for Texas companies, remote-first statewide.
The Problem
The expensive email attack is not the obvious one. It is a message that looks like it came from your controller, your fuel supplier, or the title company handling a closing, asking for a small change to banking details. Staff comply because the request is plausible, the timing fits a real transaction, and the sender address is close enough to pass a busy glance. Behind that, most companies have never published sender authentication records, which means anyone on the internet can send mail that appears to come from your domain to your customers. Add a compromised mailbox quietly forwarding copies of every message to an outsider, and you have the pattern behind most business email fraud claims.
The Solution
We work three fronts at once. Inbound filtering, impersonation detection, and attachment sandboxing catch what should never reach a person. Sender authentication records for your domain are published and moved to enforcement, so forged mail claiming to be you gets rejected before it lands anywhere. Inside the tenant we lock down forwarding rules, tighten mailbox permissions, enable encryption for messages that carry protected information, and set alerts on the configuration changes attackers make first. All of this is tenant-side work delivered remotely, so a firm in Midland or McAllen gets the same result as one in Houston. Houston metro clients can also have us in the room for staff sessions, and elsewhere those visits are scheduled from Houston. Pricing is a fixed monthly retainer set on a discovery call.
Core Responsibilities
Keeping Bad Mail Out
Protecting Your Own Domain
Inside The Mailbox
Engagement Process
Audit The Tenant
We review your current mail flow, filtering policy, forwarding rules, delegated access, and existing DNS records. This step alone usually turns up an old rule or a forgotten shared mailbox that nobody can account for.
Publish Authentication Carefully
Sender records are staged in monitoring mode first so we can find every legitimate system that sends on your behalf, from your accounting package to your dispatch software. Only then do we enforce, which avoids breaking invoices on a Friday.
Harden And Filter
Impersonation protection, sandboxing, and encryption policies go live, and risky tenant settings get corrected. Where a rule would interfere with how your business genuinely communicates, we adjust the rule rather than the business.
Monitor And Coach
Authentication reports and mailbox alerts are reviewed on an ongoing basis, and your finance and front office staff get a short, practical process for verifying any request to change payment details.
Where We Deliver This
Common Questions
Someone emailed our bookkeeper pretending to be a vendor. Would this have stopped it?
Impersonation protection catches a large share of those messages before delivery, particularly lookalike domains and display name spoofing. No filter is absolute, which is why we pair it with a verification habit for payment changes: a call to a number you already had on file, never one supplied in the email itself.
Our marketing emails stopped delivering after someone touched DNS. Can you fix that?
Yes, and it is a common consequence of publishing authentication records without inventorying every sender first. We identify each legitimate platform sending as your domain, authorize them properly, and then move to enforcement so real mail delivers and forgeries do not.
Do we need this if we already use Microsoft 365 or Google Workspace?
Both include capable protection that most companies never finish configuring. The gap is rarely the license and almost always the settings: enforcement never enabled, impersonation lists empty, forwarding unrestricted. We use what you already pay for before recommending anything additional.
We send patient and contract records by email. Is that a problem?
It is a risk you can manage rather than a practice you have to abandon. Encryption can apply automatically when a message carries protected information, and access can be restricted so the recipient authenticates instead of simply forwarding. For clinics this also supports your HIPAA obligations.
How do you handle field staff who barely check email?
Crews, drivers, and plant workers are often the easiest accounts to compromise because their mailboxes go unwatched for days. We apply the same protections regardless of role, keep alerting centralized so nobody has to notice on their own, and size licensing so infrequent users are not overpriced.
Ready to get started?
BOOK A CONSULTATIONAcross Texas
Email fraud in Texas follows the money, and the money here moves through wire transfers on a schedule attackers understand. Land, mineral, and residential closings across the state involve funds instructions sent by email, and title and escrow work has drawn steady attention from criminals who watch for the week a closing is due. Oilfield services and construction firms from Odessa to the Houston suburbs pay large supplier invoices under net terms, which makes a single altered banking record worth a very bad quarter. Freight brokers and customs agents along the border at Laredo, Eagle Pass, and Hidalgo trade documents all day by email with counterparties they have never met in person. Medical practices and billing companies push protected health information through the same inbox that receives spam. Agricultural operations in the Panhandle and the Rio Grande Valley settle grain, cattle, and produce contracts by email between people who are rarely at a desk. Texas also runs on a large seasonal and contract workforce, which means a steady stream of new mailboxes belonging to people who have not yet learned what your suppliers normally sound like. Fixing the domain records and the tenant settings is cheap and quick. Recovering a misdirected wire almost never works.
Email Security by City
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