Nusoft Mail Server features multiple security mechanisms to ensure continuous email services even in the event of unexpected issues.
Emails with large attachments may fail to reach their recipients due to size limitations. To address this issue, the Nusoft mail server automatically uploads the attachment to the personal web disk and inserts a download link in the email. This allows the recipient to easily download the attachment by clicking the link, preventing delivery failures caused by oversized emails that are rejected by the mail server.
In some cases, an outdated mail server may no longer function properly, but replacing it is often delayed due to the daunting task of transferring numerous accounts and emails to a new system. To address this problem, the Nusoft mail server allows you to transfer all your accounts, passwords, and emails to your new appliance without requiring manual configuration by an IT administrator. This greatly simplifies the transfer process and prevents errors, such as typos or email loss, due to DNS changes.
To tackle the challenge of evolving spam emails, the MLS-700 and above models have introduced an "AI Spam Filter" feature. This feature uses daily in-/outbound emails as Big Data for its deep learning process, continuously enhancing the filtering mechanism to create anemail filtering system tailored to the user's environment.
Unlike third-party filtering technologies that only react to spam, phishing, and scams after they have caused damage, the AI Filter proactively identifies and blocksevolving spam the moment they appear. By analyzing the details and similarities of emails, it ensures that threats are detected and blocked immediately.
Additionally, the AI Filter can further recognize unknown virus emails, treating them as spam and preventing them from reaching your inbox.
The AI Filter offers robust protection by blocking various types of evolving spam emails:
For quarantined emails, recipients are routinely notified via system emails, allowing them to decide whether to retrieve the quarantined messages without requiring assistance or intervention from IT administrators.
Outlook Calendar and Contacts use non-standard protocols for communication, which means most mail servers cannot synchronize these features with Outlook. To address this, Nusoft Mail Server supports CalDAV and CardDAV protocols, allowing seamless integration with common applications such as Outlook, Gmail, iOS Calendar/Contacts, and Android Calendar/Contacts. This ensures users can easily access and synchronize their calendar and contacts across various devices.
Every morning, when you log into your mailbox, the first task is often dealing with an overwhelming number of emails. To achieve higher work efficiency, you can take advantage of the Nusoft MLS series' "Receive Later" and "Send Later" features, besides managing your emails with customized folders.
Receive Later：
This feature allows you to postpone dealing with less urgent or important emails without forgetting them. By doing so, you can focus on high-priority emails first, preventing your inbox from becoming overwhelming and maintaining higher work efficiency.
Send Later：
When you are finished editing an outgoing email but want to delay sending it, this feature allows you to assign a designated time for it to be sent. In addition to scheduling emails, this feature can also be used as a memo. For example, you can schedule a reminder to be sent to yourself at a specific time.
As spam emails become increasingly complex, mail servers without effective filtering mechanisms can quickly become overwhelmed. This often compels companies to invest in expensive email filtering appliances in addition to their existing mail servers.
To tackle this issue, Nusoft's entire product line is equipped with a multi-layered filtering mechanism that is both self-learning and customizable. It allows for the creation of customizable rules (global/ individual) and the management of white- and blacklists, effectively protecting you from the nuisance of countless spam emails.
If your mail server starts sending spam or virus-laden emails due to credential leakage, it risks being blacklisted by RBL (Real-time Blackhole List) websites, which will prevent it from delivering emails. To address this issue, Nusoft offers an outbound email filtering mechanism that is not provided by third-party vendors. When an email is flagged as suspicious, the sender receives an email notification, reducing the likelihood of the mail server being blocked.
Nusoft Mail Server offers various settings to limit email sending, including Max. Deliveries per IP per Minute, Max. Recipients per IP per Minute, Max. Deliveries per IP per Day, and Max. Deliveries per SMTP-Auth Account per Day. When these limits are exceeded, emails are intercepted, and the IT administrator is notified via email.
Dual-appliance backup deployment is essential in network environments where continuous email service is critical. Unlike many third-party products that perform backups periodically—leading to potential data loss during gaps—Nusoft's real-time high availability solution uses dedicated ports between two appliances to perform backups in real time, ensuring that all emails are perfectly backed up.
Additionally, the MLS-3800 features a 1+1 power redundancy system, ensuring uninterrupted email service even during a power outage by utilizing two independent power supplies.
Hard disks are among the more fragile components in a mail server appliance, which often leads to challenges in quickly restoring operations after a failure, especially when the system is deployed on the hard disk itself. The situation can worsen if regular backups are not performed, potentially leading to significant data loss.
To mitigate this risk, Nusoft uses industrial-grade SSDs that are more durable than standard hard disks. In the event of a built-in disk failure, the system remains intact and can continue functioning after a new hard disk is installed. For data storage, Nusoft implements HDD RAID 1 to prevent data loss.
Additionally, disaster recovery is available to fully back up users' mailboxes, and USB hard disk backup ensures data safety even if the built-in hard disk is damaged, allowing for the rapid restoration of system operations.
Long-term email storage is vital for preserving an organization's memory. Many businesses invest in specialized archiving and auditing appliances, which can cost nearly TWD$100,000 each. To address these needs, the Nusoft Mail Server (MLS-700 and above models) offers both archiving and auditing functions.Emails that meet specific criteria are temporarily withheld from delivery for inspection. Additionally, archived emails are stored on the built-in HDD and backed up to external file servers, such as NAS and Samba, etc. This multi-device storage approach helps prevent data loss. The user-friendly interface also makes it easy to view and search email messages
Mail logs are crucial because they reveal why an email was not successfully delivered. However, many third-party mail servers lack this feature.
To address this issue, the Nusoft mail server provides comprehensive email logs, including connection information with senders, recipients, and other servers, as well as Mail Filtering Logs and Mail Queue Logs. With these logs, IT administrators can quickly identify the root cause of issues and resolve them efficiently.
When sending an email with a large attachment, users of standard mail servers often have to upload the file to external storage services like Dropbox or Mega and then insert a hyperlink into the email, which can be inconvenient.
To solve this issue, the Nusoft mail server automatically uploads large attachments to the built-in personal web disk and inserts the hyperlink directly into the email. This approach effectively prevents delivery failures caused by oversized attachments.
Many third-party mail servers impose a limit on the number of users they can support. Once this limit is reached, businesses are often forced to invest in additional appliances or purchase more licenses, significantly driving up the cost of maintaining the mail system.
To better meet the needs of growing businesses, Nusoft Mail Server provides a recommended user capacity based on hardware performance rather than imposing a strict user limit. This means that as your business expands, you can easily add more accounts without incurring additional costs.
To prevent spam, many ISPs abroad implement the OP25B policy, which blocks TCP port 25. As a result, business travelers often need to use SMTPS for sending emails. However, since standard mail servers typically do not support the import of SSL certificates, users often encounter alarming "insecure connection" warnings when sending emails.
Nusoft mail servers come with a built-in certificate management feature, allowing users to import their SSL certificates. This ensures a secure connection when communicating with the server using encryption methods like SMTPS, POP3S, IMAPS, and HTTPS, increasing user trust in the system. scheduling
Nusoft provides users with a free, dedicated mobile app that allows effortless integration of contacts between the mail server and mobile devices.
Additionally, users receive instant notifications for new incoming emails, eliminating the need to manually check the inbox or repeatedly sync emails on mobile devices.