well i _think_ it's called spoofing. what i've done, in order to ease configuration of my laptop users' email setup, is to set up a fake zone on the LAN's internal DNS such that their ISP's smtp server resolves to the local one on the LAN. so they don't have to switch smtp servers in their mail client when they leave the building. seems fair enough.
the problem i'm having now is someone (on a fixed desktop no less) is trying to email [EMAIL PROTECTED] and the mail is returning with a "553 5.3.5 isp.net.au. config error: mail loops back to me (MX problem?)".
i'm a bit stuck as to how to resolve this issue. (pun? what pun?) ...
although as i write this i've just thought, if i allowed the LAN's sendmail to relay for isp.net.au, maybe this would solve it? i'll have to think about that a bit more. it also sounds dangerous, since said server is also receiving mail on the external interface.
any other ideas?
cheers,
..S.
-- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
