Why it happens
Since 2024 Google and Yahoo, and since May 2025 Microsoft's Outlook.com, Hotmail and Live, check that every email really comes from the domain it claims to. Gmail moved from warnings to outright rejections in November 2025. If your domain's SPF, DKIM and DMARC records are missing, wrong or clash with each other, your emails get junked or refused, and you often only find out when a customer says they never got the invoice.
Most small businesses send from more than one place: Microsoft 365 or Google Workspace for everyday mail, the website for contact forms and order confirmations, and Xero, QuickBooks, Mailchimp or a booking system for the rest. Each one has to be allowed in the same records, in the right way, without going over SPF's ten-lookup limit.
What we fix
550 5.7.515 Access deniedfrom Outlook or HotmailWe set up SPF, DKIM and DMARC so they pass together, then send test emails to Outlook, Gmail and Yahoo and check the headers with you.
- Emails arriving in customers' junk folders
We check every service that sends as your domain, add the missing ones properly and fix the ones that are failing alignment.
- Website contact form or order emails never arrive
We move the site off unauthenticated PHP mail onto proper authenticated sending through your mail provider or a sending service.
- Invoices from Xero, QuickBooks or Sage bounce
We authorise your accounting software to send as your domain, using its own DKIM keys, so invoices stop bouncing.
- DMARC stuck on p=none, or reports you can't read
We read the reports, fix what's failing and move you safely to quarantine and then reject, so nobody can spoof your domain.
- Someone is sending fake emails pretending to be you
We lock the domain down with DMARC enforcement and check your mailboxes for signs of a compromised account.
The qualifications behind the fix
Microsoft MVP and Microsoft 365 partner, AWS Solutions Architect, WordPress certified, Apple developer, Google IT Support and UniFi partner. One UK team for websites, email, apps and networks.
Microsoft MVP
Microsoft's award for independent experts, given for deep technical knowledge and work with the community.
Microsoft 365 partner
Business email, Teams, SharePoint and security, set up and fixed by a Microsoft partner.
AWS Solutions Architect
Certified to design and run hosting on Amazon Web Services, from a single site to a whole platform.
WordPress certified
WordPress and WooCommerce sites built, repaired and kept up to date by certified developers.
Apple developer
Google IT Support certified
UniFi partner
Can you fix emails going to spam the same day?
Usually, yes. Most cases come down to DNS records we can correct on the call once we have access to your domain. Some changes take a few hours to spread across the internet, and we check again once they have.
Do I need SPF, DKIM and DMARC?
Yes. Gmail, Yahoo and Microsoft all expect a business domain to have all three. SPF lists who may send, DKIM signs each email, and DMARC tells the receiver what to do when a message fails.
Will I need to change my email provider?
Almost never. We fix the set-up you already have, whether that's Microsoft 365, Google Workspace or your web host's email.
What do you need from me?
A login for wherever your domain's DNS is managed (often the company you bought the domain from) and admin access to your email. If you don't know where those are, we'll find out on the call.
Related fixes
Guides on this
Better rebuilt?
If what's broken can't be patched sensibly, we tell you on the call and quote to rebuild it properly, keeping your content and your place in Google.
Get it fixed today
Tell us what's wrong and when to ring. Two minutes, no account, no call centre. The technical questions come after and you can skip them.
- LoggedYour name, number and the problem are saved the moment you send them.
- Called the same dayA UK engineer rings you at the time you picked.
- Diagnosed and quotedWe find the cause and tell you the price before any work starts.
- Fixed and verifiedWe test it with you, explain what we changed and stand behind the fix.
Your job ticket
Booked. We'll be in touch at the time you picked.
A few more details help us come ready. Skip anything you don't know.
