Email filtering, phishing protection, SPF, DKIM and DMARC
Email Security and DMARC for Australian Businesses
Stop scammers using your name and make sure your emails reach your clients
Digitek IT sets up and looks after email security for small and medium businesses. We filter phishing and malicious emails before they reach your team, secure every mailbox with multi-factor authentication, and set up SPF, DKIM and DMARC so other email servers can tell your real emails from fakes.
If your emails are landing in spam or someone is sending emails that look like they came from you, we find out why and fix it.
Or call 02 4504 8643
What we look after
From the inbox to your domain settings.
- Filtering for phishing and malicious links
- SPF, DKIM and DMARC set up and checked
- Multi-factor authentication on every mailbox
- Phishing training and simulations for staff
- Microsoft 365 mailboxes backed up offsite
- Email delivery problems found and fixed
Some of the businesses we work with
Email Security
Most scams aimed at small businesses start with an email
A fake login page steals a password, a fake invoice asks for payment, or a scammer sends emails that look like they came from your business. In 2024-25, email compromise was the cybercrime businesses most often reported to the Australian Signals Directorate.
Email security works in layers. Filtering stops most bad emails before they arrive, multi-factor authentication means a stolen password is not enough on its own, DMARC stops scammers sending as your domain, and training helps your team spot what still gets through.
Email security is worth a look if
- Your emails are landing in clients' spam folders
- Someone has sent emails pretending to be your business
- Staff are receiving more phishing emails than usual
- You do not know whether your domain has a DMARC record
- A mailbox in your business has been taken over before
- Your insurer has asked about your email security
Your clients should be able to trust that an email from your business really came from you.
SPF, DKIM and DMARC
What SPF, DKIM and DMARC do
These three records sit in your domain’s DNS settings. Together they let other email servers check that an email claiming to be from your business is genuine.
SPF
A list of the services allowed to send email for your domain, such as Microsoft 365 and the accounting or marketing software you send invoices and newsletters from.
DKIM
A digital signature added to every email you send, so the receiving server can check it really came from your domain and was not changed on the way.
DMARC
A rule that tells other email servers what to do with emails that fail those checks, from letting them through to rejecting them, and sends you reports on who is sending as your domain.
What We Do
Our email security services
Some businesses need everything set up from scratch, and some need one problem fixed. These are the parts of email security we look after.
Email filtering
Incoming email is checked for phishing, malicious links and harmful attachments, so fewer dangerous emails reach your team’s inboxes.
SPF, DKIM and DMARC setup
We find every service that sends email for your domain, set up the records properly and move DMARC to a policy that blocks fake emails in planned stages.
Mailbox security
Multi-factor authentication and sign-in rules on every mailbox, so a stolen password alone is not enough to get in.
Email delivery fixes
When your emails land in spam, we check your records and the services sending email for you to find the cause and fix it.
Phishing training
Practical training and phishing simulations show your team what a suspicious email looks like and what to do when one arrives.
Help after a scam email
If someone clicks a link or a mailbox is taken over, we secure the account, check for changes such as forwarding rules and help you work out what to do next.
Why Digitek
Why businesses choose Digitek for email security
Every agreement sets out how quickly we respond, based on how serious the problem is. When nobody in the office can send or receive email, you get a response within 1 hour.
DMARC done in stages
We move DMARC from monitoring to blocking only once every genuine sender passes, so your own invoices and newsletters are not caught along the way.
A Microsoft partner on your side
We set up the email security features in Microsoft 365 properly for the plan you already have, before suggesting anything extra.
Plain English
We explain what we found and what each change does, without technical jargon.
Price agreed up front, no lock-in
We agree the price before any work starts, and agreements are month to month with 30 days notice.
Our response times
Critical
1 hour
High
2 hours
Medium
4 hours
Low
8 hours
Business hours, Monday to Friday, 8:30am to 5pm.
How It Works
How we secure your email
01
We check your domain and mailboxes
We look at your SPF, DKIM and DMARC records, your email filtering, how mailboxes are secured and which services send email for you.
02
You get a clear plan and price
We explain what we found in plain English and agree what to fix and the price with you before any work starts.
03
We fix the gaps
We set up filtering, sign-in security and your records, then move DMARC towards blocking fake emails in planned steps.
04
We keep it up to date
When you add new software that sends email, we update your records, and we help your team when a suspicious email arrives.
Where We Work
Email security for businesses across Australia
Digitek IT is based in Western Sydney, with on-site support across Penrith, Parramatta, Norwest, Blacktown, the Hawkesbury and South West Sydney, including Liverpool and Campbelltown.
Email security is set up and looked after remotely, so we also look after businesses in Melbourne, Newcastle and across Australia.
Our Reviews
What our clients say
Questions
Email security and DMARC: common questions
What is DMARC?
DMARC is a record in your domain’s DNS settings. It tells other email servers what to do with emails claiming to be from your business that fail SPF and DKIM checks, whether that is letting them through, sending them to spam or rejecting them, and it sends you reports on who is sending email as your domain.
Does a small business need DMARC?
Google, Yahoo and Microsoft now require businesses that send large volumes of email to their users to have SPF, DKIM and DMARC in place, and emails without them are more likely to be rejected or sent to spam. Even if you send less, DMARC is what stops scammers sending emails that look like they came from your domain.
Why are our emails going to spam?
Often it is because SPF, DKIM or DMARC are missing or set up incorrectly, or because a service that sends email for you, such as your accounting or marketing software, is not included in your records. We check each of these and fix the cause.
Will DMARC stop our own emails from being delivered?
Not when it is done in stages. We start DMARC on monitoring, use the reports to find every service that sends email for you, fix those, and only then move to a policy that sends fake emails to spam or rejects them.
Someone is sending emails pretending to be us. What should we do?
Let your clients and suppliers know, and do not reply to the fake emails. Then call us. We check whether the emails came from your real mailbox, your domain or a lookalike domain, secure any affected account and set up DMARC so fakes using your domain are blocked. DMARC cannot stop lookalike domains, so we also show your team how to spot them.
Can you help if an email account has already been hacked?
Yes. We secure the account by resetting the password and signing out every session, turn on multi-factor authentication, check for forwarding rules and other changes the attacker may have made, and help you work out who needs to be told.
How much does email security cost?
It depends on how many mailboxes you have, how many services send email for your domain and what is already in place. We check your setup first and agree a price with you before any work starts.
Ready to secure your business email?
Tell us what is happening with your email. We will check your domain and mailboxes, explain what we find and agree the price before any work starts.
Or call 02 4504 8643