Mail settings

To access the mail settings, select "Mail" from the "Settings" section in the left navigation panel.

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If the "Mail" menu is not visible, refer to the following article.

General Settings

In this section, you can configure general email-related options for your server.

• Mail compression:
  Enables or disables the compression of email stored on the server.
  Enabled: Emails are compressed, which can save disk space.

• DSN (Delivery Status Notification):
  Allows you to request a delivery status notification for sent emails.
  Enabled: The mail server will attempt to send you a status update about whether the email was successfully delivered or not.

• Disable IPv6:
  This option disables sending email for Exim (mail transfer agent) over IPv6 addresses.
  Enabled: Email will only be sent over IPv4.

Blacklist Management

These settings allow you to manage which senders, recipients, and IPs are blocked from interacting with your email server.

• Sender blacklist:
  Add email addresses or domains to block incoming messages from specific senders.

• Sender IP blacklist:
  Block incoming messages from specific IP addresses or IP ranges.

• Recipient blacklist:
  Add recipient email addresses or domains to block outgoing messages to specific recipients.

• DNSBL (Domain Name System-based Blackhole List):
  Configure DNS-based blocklists to block email traffic from known spammers and malicious sources.
  The system will check incoming email against DNSBL services to automatically block potentially harmful emails.