An email message internet header is a metadata set containing information about the sender, recipient, routing, and delivery of an email. It can help you find the domain name of the trusted ARC sealers. The domain name must match the domain specified in the d value of the ARC-Seal and ARC-Message-Signature headers in affected messages.
Authenticated Received Chain (ARC) is a mechanism used in email authentication protocols to address the issues of message forwarding and intermediary handling of emails. It is designed to improve the reliability and security of email authentication systems like SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail).
Domain-based Message Authentication, Reporting, and Conformance (DMARC) builds upon SPF and DKIM to give domain owners greater control over how recipient servers handle their email messages. With DMARC, domain owners can specify policies instructing recipient servers on how to handle emails that fail SPF or DKIM checks. DMARC also enables domain owners to receive reports on email authentication results, allowing them to monitor and improve their email security posture.
DomainKeys Identified Mail (DKIM) allows email senders to sign their outgoing emails digitally using cryptographic signatures. These signatures are stored as DKIM records in the domain’s DNS settings. Recipients’ mail servers can then use these signatures to verify that the email content has not been tampered with and originated from an authorized sender.
Microsoft Defender for Office 365 is a cloud-based email filtering service that helps protect businesses against advanced threats such as phishing and malware in emails, links, and collaboration tools like Microsoft Teams, SharePoint, and OneDrive. Formerly known as Office 365 Advanced Threat Protection (ATP), Microsoft Defender for Office 365 provides several features to enhance the security posture of an organization’s email and collaboration environment.
This is a very interesting warning. I migrated many VBR servers, and it’s the first time I’ve encountered this warning.
The detailed warning message is below:
Warning Failed to connect to Red Hat Virtualization plug-in: Failed to login to platform service: The remote certificate is invalid according to the validation procedure.
Citrix released Virtual Apps 7 2311 on December 20, 2023. I will show you how to upgrade the existing Citrix Virtual Apps servers to Citrix Virtual Apps 7 2311.
To transition the client access namespace to Exchange Server 2019, change the DNS record for the client access namespace to the Exchange Server 2019 environment.
Veeam released the version of Veeam Backup for Microsoft 7a on December 5, 2023. The Cumulative patches contain Veeam Backup and replication v12.1 compatibility and the ability to set email notifications with Google and M365 accounts in Veeam Explorers.
When you install Veeam Backup & Replication v12.1, the Veeam Backup & Replication console 12.1 is automatically installed on the backup server. If you want to remotely access Veeam Backup & Replication v12.1, install the Veeam Backup & Replication console 12.1 on a dedicated machine.
Today, I will show you how to install Hyper-V integration services in the Ubuntu Linux VM of Hyper-V. If the Hyper-V integration services are not installed, you cannot restore any data from Veeam Backup.
Veeam Backup for Microsoft 365 has an error in one of the mailboxes. The error message is “There is an error in XML documentβ¦The specified type was not recognized: name=’SharingMessage’.
Today, I noticed two fresh vulnerabilities on the VBR12.1 Manager and console servers. Certain .net core requirements are installed when the product is installed. Unfortunately, The .net isn’t patched automatically through Windows updates.
When you try to extend the C drive from the Disk Manager tool but the Extend volume greys out, that’s because the recovery partition prevents the C drive from extending the volume.
Veeam released version of Veeam Backup for Microsoft 7a on December 5, 2023. The Cumulative patches contain Veeam Backup and replication v12.1 compatibility and the ability to set email notifications with Google and M365 accounts in Veeam Explorers.
Configuring the client access namespaces ensures clients can connect to Exchange Server 2019 using the correct URLs for each service. They help to ensure a smooth user experience and avoid issues such as certificate errors and connection failures.
The Autodiscover service connection point (SCP) provides information to domain-joined Outlook clients on connecting to the Autodiscover service for automatic client configuration.
We can reuse the existing SSL certificate for the new Exchange 2019 server. 1. Login to the Exchange 2016 Server. 2. Open Exchange Management Shell as an administrator. 3. Run… Read more »