RATS-NoPtr - An IP address which has no reverse DNS, and probably the home of a SpamBot -- If you are listed in the Spamrats/RATS-NoPtr blacklist and you operate your own mail server, you have no "Reverse-DNS Entry" in place with your ISP to resolve that IP address to your server's hostname.
DMARC is the key to improving Email Deliverability!
Email is the key to your customer communication strategy. But, what is your email reputation?
Setting up and managing your DMARC configuration is the key to getting insight into your email delivery. MxToolbox is the key to understanding DMARC.
MxToolbox Delivery Center gives you:
- Who is sending phishing email purporting to be from your domain
- What is the reputation of your domains and delegated IPs
- Where other senders are and What their reputations are
- How your SPF, DKIM and DMARC setup is performing
- What on-going maintenance you need to maintain and improve your email deliverability
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