SECURITY TOOLS
SPF and DMARC record generator
Create the SPF and DMARC records for your domain in a few clicks, ready to copy into your DNS.
Why you need them
Google, Yahoo and Microsoft now expect business email to use SPF, DKIM and DMARC. Without them your email is more likely to land in junk, and anyone can send email pretending to be you.
Where to add them
Add both as TXT records at your DNS provider: SPF on the domain itself (@) and DMARC on _dmarc. Changes usually take effect within an hour.
Start with monitoring
Begin with a DMARC policy of none and a report address. Once the reports show all your genuine email passing, move to quarantine, then reject.
MORE TOOLS
Other network tools
What is my IP?
See your public IP address and its hostname.
WHOIS lookup
Registrar, expiry date and nameservers for a domain, or the owner of an IP range.
Email health check
Check MX, SPF, DKIM and DMARC in one go, with plain-English fixes.
Blacklist check
See if your mail server is on Spamhaus, Barracuda, SpamCop and other blacklists.
SSL checker
Check who issued a certificate, when it expires and whether it’s trusted.
FREE IT REVIEW
Need help with your network or email?
Tell us a little about your business and we'll come back within one working day to arrange a review, on site or over Teams. No hard sell, just a clear picture of where your IT stands.
Prefer to talk? Call 0161 660 7471 or email hello@posilan.com