[support] changing host: dealing with mails

[Augustin (Beginner)]

Hello,


One of my web sites is changing host. I have prepared the Drupal 
files, and used /etc/hosts to test the Drupal site at its new 
location. Now, I only need to shut down the site, make a last sql 
dump, import it and then, lastly, change the DNS. 

But it only now occurred to me that migrating a web server is only 
half of changing hosts. 

What about mails?


What is a good procedure to migrate all the mails on the server, and 
also to make sure that no mail is lost during the DNS change (during 
the propagation of the new DNS)? 

I have not found a page on the web about a best practice about 
changing hosts, what data to migrate, what not, and how to be 
prepared to avoid troubles.

Any hints?

Thanks.

Augustin.




--