Re: Sendmail and DNS for two machines.

[Pedro Fernandes Macedo <webmaster margo bijoux nom br>]

Bruno Wolff III wrote:

> My recommendation would be to move all of the accounts over at once.
> Schedule a maintainance window and copy over the mailboxes and home
> directories (if applicable) from the old machine to the new one and
> change the IP address of the new machine. You should be able to practice
> this in advance to see if there are any problems.
>
>  
Bruno's suggestion is exactly what I did once to move a 1500 uses 
mailserver from one machine to another. Here's how I did it:
1 - set up the new box , testing everything.
2 - copy the home directories using rsync
3 - schedule a maintenance window at night
4 - during the maintenance window , all services were stopped on the old 
server. Rsync was run once again , to update the home directories on the 
new server. after that , I just changed the IP of the two servers and 
voila...
Keep the old server handy , in case something goes bad... If anything 
bad happens , all you need to do is rsync the home directories from the 
new server to the old server (so people dont loose their new stuff) and 
change the IP addresses again...

--
Pedro Macedo