Sender Policy Framework (SPF) is a critical email authentication protocol that plays a vital role in bolstering email security. Essentially, SPF allows domain owners to specify which mail servers are authorized to send emails on their behalf by publishing specific rules within DNS TXT records. This configuration helps receiving mail servers verify if incoming […] The post Look Up SPF Records Fast: Check Your Domain’s SPF Configuration appeared first on DuoCircle.| DuoCircle
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Cross tenant mailbox migration is a specialized form of tenant to tenant migration within Microsoft 365 environments, involving the transfer of mailboxes, shared mailboxes, public folders, and associated mailbox data between separate Office 365 tenants. This process is critical in multi-tenant environments where enterprises operate multiple Microsoft Exchange Online tenants, often due to mergers, […] The post Cross Tenant Mailbox Migration Strategies For Enterprise Microsoft 365 Users appea...| DuoCircle
The post JLR Cyber Shutdown, SlopAds App Fraud, Worm Hits npm – Cybersecurity News [September 15, 2025] appeared first on DuoCircle.| DuoCircle
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An SPF record, or Sender Policy Framework record, is a specific type of DNS TXT record published in the domain name system to improve email authentication and prevent email spoofing. The SPF record syntax defines which IP addresses and email servers are authorized to send emails on behalf of a domain, establishing an email […] The post Quick SPF Record Check Using Google’s Online Tools appeared first on DuoCircle.| DuoCircle
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 […] The post Understanding Managed Services: Clear Examples ...| DuoCircle
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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). Defined by RFC 6376, DKIM enables mail servers and mail transfer agents to verify that inbound email messages are cryptographically […] The post DKIM Selector Explained: What It Is And Why It’s Required For Email Authentication ...| DuoCircle
This week’s cyber reports reveal escalating threats on trusted platforms. A significant phishing attack on npm spread malware to millions, while a compromise| DuoCircle
The Simple Mail Transfer Protocol (SMTP) server is a communication protocol or the technology behind email communication. In other words, SMTP is the protocol| DuoCircle
Email security is one of the most critical aspects of running a professional and trustworthy business. With cyber threats, phishing attempts, and email| DuoCircle
Sometimes your email just doesn’t reach its recipient. You’ve done everything right— crafted the perfect message, sent it to the correct address, and even| DuoCircle
In a world where emails are the primary means of communication, the risk of phishing attacks lurks just one click away. Whether it's a seemingly innocuous| DuoCircle
This week's cybersecurity round-up brings you stories you need to know, from fake crypto wallets lurking in Firefox to major breaches hitting airlines, global| DuoCircle
As the awareness of threats becomes more widespread, hackers and spammers are upping their game in an attempt to gain access to valuable information. Today’s| DuoCircle
Not sure what a IDN forgery is? Click here and take a look at your browser's address bar... go ahead, I'll wait.| DuoCircle
Outbound SMTP is used to reliably send email from any program with a high level of reliability. Highly reliable outbound SMTP for email clients and servers.| DuoCircle
Advertising-free hosted email - send email from your own domain, with protection from spam, malware and phishing attacks| DuoCircle
Backup MX services help protect your messages when your mail server goes down. Up to 30 days in the queue, unlimited users - full access to logs.| DuoCircle
How fast-growing digital world to make work easy and effective with email forwarding. You will get to know why you should use email forwarding and what its use is.| DuoCircle
Real-time link click protection defends against malicious links in emails every time, on every device, from anywhere.| DuoCircle