Domains

The table contains the list of internet domain names for which the server will accept incoming email.

Create / Modify

Add a domain to the list of those configured for the email reception.

Domain
The domain name, for example nethesis.it.
Description
An optional field useful to the system administrator to take note of domain information.
Delivery locally
Select this option to configure the server to deliver incoming mail addressed to the specified domain in local folders.
Forward to another server
If you select this option, incoming mail will be forwarded to the specified server.

Delete

Remove the domain from those managed by the server. Any email intended for the domain will be rejected.

Filter

Configure the filtering options of the email (antivirus, antispam, forbidden attachments, etc).

Antivirus
Enable virus scanning of emails in transit.
Antispam
Enable antispam scanning of incoming emails.
Prefix Spam
This prefix is added to the object underlying the recognized emails as spam.
Attachment Blocking
The email server will block emails that contain attachments of types specified.
Executable
The email server will block executable programs in email attachments.
Archives
The email server will block emails with attachments containing archive files (zip, rar, etc.).
Custom List
Define a list of extensions that will be blocked, such as doc, pdf, etc. (without starting dot, ie doc and not .doc).

Messages

Configure the management of email messages.

Accept message size to
Use the cursor to select the maximum size of a single email message. The server will reject email larger than the value set, returning an explanatory error.
Retry sending for
Use the cursor to select the maximum time for which the server try to send a message. When it reaches the maximum time and the email has not yet been delivered, the sender will receive a error and the message is removed from the send queue, the server will no longer attempting to deliver it.
Always send a copy (Bcc)
Send a blind carbon copy (Bcc) to the given email address for any message entering the email system.

Queue Management

This tab allows you to manage the queue of emails in transit on the server. The table lists all the mail waiting to be delivered, and is normally empty. The following fields will be shown:

Delete

It is possible to delete an email in the queue, for example, an email sent by mistake or too large.

Remove all

The button will delete all the emails in the queue.

Try sending

Normally, the server, in case of problems while sending the email, retries at regular intervals. Clicking Attempt to send, emails will be sent immediately.

Update

Reload the list of emails in the queue.

SMTP access

Allow relay from IP addresses
Allow sending mail messages from the specified IP address, without SMTP authentication and other security policy restrictions. This option is good for legacy network devices that do not support SMTP/AUTH protocol.
Allow relay from trusted networks
Allow sending mail messages from any host in the trusted networks, without SMTP authentication and other security policy restrictions.
Enable authentication on port 25
Email clients should send messages only using the standard submission port 587. For legacy environments, this option enables client authentication and message relaying also on port 25.