Author: Staff

The Time to Live, or TTL, setting in DNS records plays a pivotal role in the behavior and reliability of internet communications, and this includes email delivery. When considering email infrastructure, most people focus on MX records to route messages properly, but the TTL associated with those MX records often goes unnoticed despite its significant…

The process of sending and receiving email, something so commonplace and seemingly effortless today, is underpinned by a complex infrastructure of internet protocols and configurations. At the heart of this system lies the Domain Name System, or DNS, which functions as the directory service of the internet. While DNS is most often associated with translating…

Email and the Domain Name System (DNS) are deeply interwoven technologies that together form the backbone of modern digital communication. While email functions as a high-level application protocol designed to transmit messages between users and systems, it is DNS that enables this communication to occur reliably, efficiently, and at scale. Without DNS, email systems would…

The history and evolution of email technology trace a journey from experimental digital messaging systems to the sophisticated, globally distributed, and security-conscious infrastructure used today. Email, short for electronic mail, predates the modern internet and has its roots in the early 1960s and 1970s, when computer scientists working on time-sharing mainframes sought ways to leave…

Content Delivery Networks, or CDNs, are a cornerstone of modern web performance and scalability. While they are traditionally associated with the distribution of website assets such as images, JavaScript, CSS, and video, their role in email content delivery optimization has become increasingly significant. Though email messages themselves are typically routed and delivered via SMTP protocols…

Peering agreements, though commonly associated with internet traffic exchange at the network layer, play an increasingly relevant and nuanced role in email delivery. In the context of email infrastructure, peering refers to arrangements between email service providers, ISPs, and large-scale infrastructure operators that determine how SMTP traffic is routed, prioritized, filtered, and managed between them.…

The journey of an email from sender to recipient is a sophisticated and intricate process that relies on a wide array of internet protocols, infrastructure components, and security mechanisms. While the end-user experience may be as simple as composing a message and clicking “send,” the systems that transport that message across the internet involve coordinated…

Transferring a domain from one registrar to another or migrating DNS hosting services is a routine part of managing online infrastructure, but when email services are tied to that domain, the process becomes more sensitive. Email continuity must be preserved throughout the transition to prevent delivery failures, lost communications, or disruptions in authentication. Domains are…

Choosing appropriate TTL values for DNS records is a foundational yet often overlooked aspect of managing email infrastructure and domain services. TTL, or Time to Live, is the duration in seconds that a DNS record is cached by resolvers before a new query must be made to authoritative DNS servers. This setting directly impacts how…

DomainKeys Identified Mail, or DKIM, is one of the most critical authentication mechanisms in modern email security. Its purpose is to verify that an email was sent from an authorized server and that its contents have not been altered in transit. DKIM works by applying a digital signature to the headers of an outgoing message.…