General Configuration

The General Configuration contains the settings for the basic functionality of the mail server.

Machine Hostname

This is where the mail server's hostname is entered.

In the example above this would be the configuration for the
mailbox.corp.guardiandigital.com machine.

Relay Host

If the machine needs to pass mail to another mail server to get out to the Internet, the hostname of the mail server should be defined as the Relay Host. If a Relay Host is defined, mail to all domains not defined as a mail route or virtual domain, will be forwarded to the machine defined as Relay Host.

In the above example, mail is being relayed out to the Internet through the relay server smtp.corp.guardiandigital.com. so smtp.corp.guardiandigital.-com was used here.

Backup Relay Host

If there is a secondary mail server that will be receiving mail from this server, the address of the server would be entered here.

This server will automatically be used in circumstances where the primary relay host is inaccessible for sending outbound mail.

In our example there is only one server to relay mail to, smtp.corp.guardi-andigital.com, so this field remains blank.

Always BCC: Address

If an email address is entered in here, a copy of each mail received by this server will be sent to that address. This field is optional. If mail to the BCC address bounces, the bounced message will be sent to the sender.

POP Before SMTP

A user outside the network with POP access to the server can receive their e-mail, however they can not send e-mail due to security restrictions. What this option does is allow POP to verify the user. Once the user uses POP to check their e-mail they will then be allowed to send mail through the server.

Set this option to Enabled if outside POP users need to send e-mail from the server. If users are using Microsoft Outlook this feature needs to be enabled.

• [NOTE:]It will also be necessary to configure the user's mail client to use this feature.

Grace Period

If POP Before SMTP is enabled this determines the amount of time, in minutes, that a user is valid, before being required to re-authenticate themselves by checking their e-mail via POP.

Configuring this for around 10 to 15 minutes is reasonable.