Derek Ragona wrote: > At 12:36 PM 4/5/2007, Jonathan Horne wrote: >> currently, my email server is just a single box, accepting and sending emails >>from and to the internet. spamassassin and sendmail, and so far, it works >> satisfactory. >> >> i would like to change it up, so that i have a pair of servers doing MX >>from the >> internet, which then passes to an internal server for delivery. if i do >> that, i >> could remove spamassassin from the internal server, and run it on just the 2 >> external. all those configurations is really not my issue here... what im >> really pondering is how would external servers that are seperate from >> where the >> target mailboxes are, know which addressess are acceptable and which to >> return a >> 550? >> >> does anyone have any setups that are similar to this, and could advise me or >> point me in the right direction? >> >> thanks, >> jonathan > > > Generally you want to filter and bounce mail at the point of origin, so > your mail server that first accepts the mail. As long as you have the > bandwidth on that server you would spam check, virus check there, bouncing > any bad ones. Then forward to your internal server only clean mail for > delivery.
Bounces generate backscatters. The idea is to filter and *reject* (instead of bouncing) at the point of origin. Regards, Mikhail. -- Mikhail Goriachev Webanoide Telephone: +61 (0)3 62252501 Mobile Phone: +61 (0)4 38255158 E-Mail: [EMAIL PROTECTED] Web: www.webanoide.org _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"