Managed services refer to the proactive outsourcing of IT tasks and responsibilities to a third-party provider, enabling businesses to streamline their technology operations while focusing on core competencies. Unlike traditional IT outsourcing, which is often project-based or reactive, managed services emphasize ongoing infrastructure management, performance optimization, and proactive maintenance under a predefined service level agreement (SLA). This approach is designed to maximize system uptime, enhance security posture, and improve operational efficiency.
DomainKeys Identified Mail (DKIM) is a critical component of modern email security standards and plays a vital role in email authentication frameworks alongside Sender Policy Framework (SPF) and Domain-based Message Authentication, Reporting & Conformance (DMARC).
This week’s cyber reports reveal escalating threats on trusted platforms. A significant phishing attack on npm spread malware to millions, while a compromise of Salesloft’s GitHub account impacted the Drift application. Researchers also uncovered a malvertising campaign using fake GitHub commits and detailed the stealthy EggStreme framework, highlighting how attackers are exploiting familiar workflows with increasing sophistication and success.
Laposte.net’s 2025 email authentication shift: strategic insights and implementation best practices for enterprises
by DuoCircle
La Poste, France’s leading email service provider, which serves millions of users with private email addresses, has introduced mandatory email authentication requirements starting in September 2025. Now, what this means is that every email sent to Laposte.net addresses must pass SPF, DKIM, and DMARC authentication checks. If the senders don’t adhere to this, their emails will be relegated directly to spam.
In the realm of electronic communications, an email server is a critical component responsible for sending, receiving, and storing emails. At the core of email transmission lies the Simple Mail Transfer Protocol (SMTP), an essential set of rules that govern how outbound mail servers relay messages efficiently and securely. Within this infrastructure, the mail transfer agent (MTA) functions as the backbone, managing the routing and delivery of email through SMTP relays.
DomainKeys Identified Mail (DKIM) stands as a crucial pillar of email authentication and security. Defined under RFC 6376, DKIM is an email protocol that uses cryptography to sign email messages with a private key after leaving the mail client or mail server, specifically the mail transfer agent (MTA). The cryptographic signature included in the email headers enables receiving mail servers to perform signature verification by retrieving the corresponding public key from a DNS TXT record associated with the sender’s email domain.
Think of brands like Samsung, eBay, Amazon, and Hulu. These brands are undoubtedly some of the biggest names in their respective industries and have been around for years, which means you can easily trust them with your personal information and data without a second thought.
Email relay services play a pivotal role in facilitating seamless email delivery within modern business communication frameworks. At their core, these services function as intermediaries—SMTP relays—that channel outbound email messages from a sender’s email client or mail server to the recipient’s mailbox provider via a secure pathway. Acting as advanced mail transfer agents (MTAs), email relay services manage complex email routing, ensuring that emails pass efficiently through various email gateways and SMTP servers.
This week brought a wave of innovative and large-scale cyberattacks. Scammers abused social media ads with AI features to push harmful links, with hundreds of accounts posting thousands of scams. More than 100 compromised government email accounts were used in a global phishing campaign against embassies and international organisations. At least 65 servers were hijacked to manipulate Google search rankings, while new backdoors turned email into a data theft tool. Attackers also exploited a Microsoft-signed driver to shut down security defences and install malware. These incidents highlight how quickly trusted platforms and tools can be weaponized, emphasizing the critical need for robust email security measures.
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![AI Spreads Malware, Diplomats Phished Globally, GhostRedirector Exploits Servers – Cybersecurity News [September 01, 2025]](https://www.duocircle.com/wp-content/uploads/2025/09/sender-policy-framework-5670.jpg)