Correct, I did indeed have to turn those bits off. But in my case, the roll forward / roll back advantages outweighed the disadvantages. I had also set a short ttl prior to moving, so my real dns changes could action fast. Probably a combination of everything would be a whole solution.
Short ttl's Multiple mx records Port forwarding -Andy- -----Original Message----- From: Renaud Allard [mailto:[EMAIL PROTECTED] Sent: 13 November 2007 12:31 To: [EMAIL PROTECTED] Cc: 'Ian P. Christian'; 'Jonathan Addleman'; [email protected] Subject: Re: [exim] switching mail servers Andrew Johnson wrote: > I once did a move where the servers were hosted on somebodyelses > network and they were geographicaly seperated. I used IPTables to > forward connections from the old server to the new one so the > switchover was fully under my control, then the DNS changes followed > later - this allowed for easy rollback. > > > While this may sound great, you should take great care of spamscanning when using such a solution because all mails will appear as coming from your old mailserver. This means you should not deny on helo/ip couple or dns verification. You will also not be able to check for blacklists. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
