On Tue, Apr 16, 2002 at 03:54:30PM +1000, [EMAIL PROTECTED] wrote: > Hello David, > > DF> well that's what the discussion has been about, search back a few weeks > DF> for the replies to my thread on the subject of secondary mx's. > > DF> If you have a secondary on the same site as your primary then it covers > DF> you if the primary goes down but not if your site is cut off from the > DF> net. You could then have a tertiary mx that is off site of course. > DF> Or you could not have any. > > It is my understanding that a secondary MX will still reject the mail > 5 days after just like any other mailserver on the net would if you > don't have a server up and running that can collect the mail or
That really depends on how it is setup; I'm doing secondary for one domain which has been off the air for almost a week now. I'm just queueing the mail. They'll let me know once they are back up and I'll send it all on. > > there is a downside... the secondary can be used to spam you, as it > can't check if they are a valid account until it's shunted to the > primary or a server that deals with it... But the primary can quite happily refuse to accept email even from a secondary[*]. If you turn on 'sender_verify_callback_domain = *' in Exim you'll probably catch a lot of spam no matter where it is from. Anand [*]: Technically you are violating the standard because your MX has agreed to deliver the message but the ultimate destination is refusing to accept it. But who cares, it is spam. -- `` We are shaped by our thoughts, we become what we think. When the mind is pure, joy follows like a shadow that never leaves. '' -- Buddha, The Dhammapada -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
