Blog Archives
Understanding Email Authentication Headers: SPF, DKIM, and DMARC Explained
Email authentication plays an essential role in protecting against domain spoofing, phishing, and unauthorized email delivery. Three key standards, SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance), work together to verify sending servers, validate message integrity, and confirm that authentication aligns with the sender’s domain. Understanding how […]
Change the Maximum Size Limit for Outlook PST and OST Files
Microsoft Outlook stores mailbox data in PST and OST files. By default, modern versions of Outlook typically have a file size limit of 50 GB for Unicode PST and OST files. If Outlook reaches this limit, users may see errors stating that the Outlook data file has reached its maximum size. Microsoft provides registry values […]