SMTP Gateway (any MTA)
The SMTP Gateway filtering interface allows you to configure the settings for filtering all incoming and outgoing mails for your domain, irrespective of the Mail Transfer Agent (MTA) you are using. The mails will be checked for spam, viruses and so on, before passing on to the mail server for delivery to the recipients.
To configure filter settings for all inbound and outbound mails, select 'SMTP Gateway (any MTA)' from the 'Mail Filtering Type' drop-down box.
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