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Originally Posted by ECB  But if the non-MTAed servers have a direct connection to the MTA servers, can't they send mail to each other through the MTAs? |
Two users on the same mailbox server won't even be able to send mails to each other if there's no MTA available for this server.
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Originally Posted by ECB You've lost me there - is it, or is it not possible to back up to a remote directory? I'm new to Linux, so be gentle... |
It is, of course.
But to prevent yourself from the "lost line" issue, you can only backup in the same location that your server is. This means if there's a problem in this location (and both server and backup are in this location), you might loose all data.
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Originally Posted by ECB I don't care if it's complex as long as I can make it work. |
Are your users using local DNS in each location ?