(1) localhost (Alias for this computer)
(2) gateway domain (Domain for all Citadel systems)
(3) smart-host (Forward all outbound mail to this host)
+ (4) directory (Consult the Global Address Book)
+ (5) SpamAssassin (Address of SpamAssassin server)
+
Which one [1]:
mail from your address. So unless you have a static domain, you'll
probably want to send mail through a smart host. Usually your ISP will
provide you with that information.
+
+directory:
+A domain for which you are participating in directory services, perhaps across
+any number of Citadel nodes. This is new and not fully supported yet.
+
+SpamAssassin:
+You can configure Citadel to use the excellent SpamAssassin software (read
+more at http://www.spamassassin.org to learn about it) to filter out incoming
+spam from your system. Learn how to do this by reading the documentation
+at http://www.citadel.org/spamassassin.php
All you have to do is save and you're done.