NETWORK TOOLS
Email health check
Check a domain’s MX, SPF, DKIM and DMARC records in one go, with plain-English results showing what’s right and what needs fixing.
Why it matters
SPF, DKIM and DMARC prove your email is genuinely from you. Without them, your mail is more likely to land in junk, and criminals can more easily send email pretending to be you.
What we check
Where your mail is delivered (MX), which servers may send for you (SPF), whether your mail is signed (DKIM on common selectors), and your DMARC policy.
Using Microsoft 365?
Microsoft 365 uses DKIM selectors “selector1” and “selector2”, which you switch on in the Defender portal. We can set all of this up for you.
MORE TOOLS
Other network tools
What is my IP?
See your public IP address and its hostname.
DNS lookup
See A, MX, TXT, NS and other records for any domain, or reverse DNS for an IP.
WHOIS lookup
Registrar, expiry date and nameservers for a domain, or the owner of an IP range.
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