rdns



What should I do if the server's IP is blacklisted (Spamhaus, etc.)?

  • August 14, 2026, 12:11:06

Suppose you have set up a mail server, prepared an important B2B email campaign with commercial proposals for client leads, or launched automated order notifications for an online store. But suddenly,...

Reverse DNS (rDNS)

  • May 19, 2023, 11:14:04

What is rDNS?rDNS is a reverse DNS check. When the email is received, it checks which nameserver and domain are associated with the sender's IP address.Most Internet Providers and email hosters w...