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Domain Mail Servers—This page is used to manage all of your domain mail servers, which are the mail servers for which SecurityGateway will be acting as a gateway. Generally these are the servers on which your users have their email accounts and where their messages are stored. When SecurityGateway receives a message for a verified user of one of your domains, it will attempt to deliver the message to the mail servers associated with that domain.
Remote POP Accounts—Use the Remote POP Accounts option to configure SecurityGateway to use the POP3 protocol to download mail from a remote POP mailbox for redistribution to a given domain's users. Once collected, the messages are parsed according to the settings provided on the Edit POP Account screen and then delivered to any valid users, just as if the messages had arrived at the server using conventional SMTP transactions..
Quarantine Configuration—This page makes it possible for you to override the "...quarantine the message" options located under many of the Security features. Further, you can choose whether or not your users will individually be able to override the default quarantine options for their domain, and whether or not they will be able to view and manage the contents of their quarantine folder. Finally, you can also choose how often users will receive an email detailing the contents of their quarantine folder: never, daily, or weekly.
Mail Delivery—The options on the Mail Delivery page are for designating whether SecurityGateway will handle the delivery of outbound messages itself or pass that responsibility to another server. This page also contains options governing how long SecurityGateway will try to deliver inbound or outbound mail that encounters non-fatal errors, before giving up and returning the message to the sender as undeliverable. These options are global options, applying to all SecurityGateway domains.
Email Protocol—The Email Protocol page contains various options governing SecurityGateway's technical handling of email. For example, you will use this page to designate the ports that will be used for receiving mail, the maximum number of concurrent SMTP sessions allowed, whether or not SecurityGateway will honor VRFY requests, whether or not you will allow plain text passwords, and other similar advanced options.
