SMTP (* administrator only)

To enable SMTP:

  1. Tick Enable SMTP to deliver and receive mails.
  2. If SMTP Authorization is required is ticked, you need to provide your DiskStation user account and password for authentication when setting SMTP server in other mail clients.
  3. Take Outlook Express for example, you can enable the option at My server requires authentication in Tools > Accounts > Mail Account > Properties > Servers. It is recommended that you enable this option to avoid being a Spammer.
  4. Limit email size by specifying Maximum size per email.
  5. If Enable SMTP-SSL is ticked, SSL secure connection will be supported when sending emails.
  6. If Ignore authorization for LAN connections is ticked, all connections except for LAN connections will have to provide user account and password for authentication.

To enter a domain name for Mail Server:

Fill in the Domain name field. If you would like to set a user's mail address as user@synology.com, then you need to specify the Domain name as synology.com.

To configure multiple domain names for Mail Server:

You can configure your Mail Server to be a multi-domain mail server. If a mail server has multiple domain names (for example: synology.com, synology.com.tw, and synology.com.us), you can send mails to the same user by specifying user@synology.com, user@synology.com.tw, or user@synology.com.us in the recipient address field.

To send mails via other SMTP Relay server:

Most ISPs block or reject mails from unknown domains. If you cannot send mails directly from your own domain, you may have to send them through well-known SMTP servers. You can configure SMTP Relay server on your Mail Server.

  1. Tick Enable SMTP Relay.
  2. Specify SMTP Server name and Port.
  3. Tick Always use a secure connection to provide encrypted connections when relaying mails.

If Authorization required is ticked, you need to provide account and password for SMTP Relay server to authenticate your mail server.