[Mailman-Users] Server Migration

[Robert Heller]

At Tue, 11 Feb 2020 14:42:15 -0500 Dennis Putnam <dap1 at bellsouth.net> wrote:

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> I've been reading up on migrating to a new server but I'm not sure I am
> reading the right instructions. It seems that copying the lists to the
> new server is one thing but it appears that the end result means the
> users will have to use a new list server. That is, if users were
> emailing listname at oldserver.domain.com they will now have to email
> listname at newserver.domain.com. That is not what I want. After migrating
> to the new server I want users to still email
> listname at oldserver.domain.com. I expect to simply rename the new server
> to the old hostname and change its IP address. Can someone point me to
> some documentation that does that type migration? TIA.

You don't "name" (or rename) the server.  You update the DNS server to use the 
new server's IP address for the old hostname.  How you update the DNS server 
greatly depends on exactly what sort of access you have to the DNS server.

It also depends on what level of access you have to the server(s).  Are these 
VPSs? Physical server boxes?  Are you just swapping physical hardware?  If you 
are swapping *physical hardware*, then you could, once the files are copied 
and everything is working (eg you have tested things as newserver.domain.com), 
you could shutdown the original oldserver.domain.com, and then reconfigure 
newserver.domain.com's IP address to be what oldserver.domain.com was.  In 
that case, there is no need to mess with the DNS server. (You might need to 
mess with a DHCP server, depending on how IP addresses are set up.)

In order to point you in the right direction, you need to tell us more...

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