GFI MailSecurity SMTP gateway mode

If you do not need to scan internal mail or do not have Microsoft Exchange 2000/2003, you must install GFI MailSecurity in SMTP gateway mode. You can install GFI MailSecurity in SMTP Gateway mode on a separate machine on the perimeter of your network (acting as a mail relay) or on the Exchange server 2000/2003 machine it self.

The SMTP gateway mode allows you to set-up more powerful content security rules. If you do not need to scan internal mail we recommend the SMTP gateway mode.

Installing GFI MailSecurity on a separate machine

If you decide to install GFI MailSecurity on a separate machine then you must install GFI MailSecurity in SMTP gateway mode. In this type of installation GFI MailSecurity checks all inbound and outbound mail before it reaches your mail server. In order to do this, it must be the first to receive all mails destined for your mail server and it must the last 'stop' for outbound mail, i.e. mails destined for the Internet. In this set-up GFI MailSecurity acts as a gateway for all email. This set-up is also known as 'Smart host' or 'Mail relay' server.

GFI MailSecurity working as a mail gateway/relay