[TriLUG] Looking for the simplest stand-in temporary mail server

[jason tower]

why do you need this at all?  just let the mail stay queued at the sender until 
you're back up.

Brian Henning wrote:
>> You may need to do it yourself or have a very nice imaginary friend.
> If 
>> your downtime is greater than x days, the server will start to bounce
> the 
>> mail.  If you have full control you can set that x variable to a 
>> comfortable number to guarantee you don't lose the mail.
> 
> "x" should be at most one day and change.  Set up the backup server and
> point the DNS to it on Friday afternoon, have the primary server back up
> by Saturday evening.
> 
> Does proper working of the backup server (with the "relay_domains=..."
> setting) depend on multiple MX records?  What I'm not quite sure I'm
> grasping yet is how does the backup server know when the primary server
> comes back, if there's only one DNS record?  Is there a way to tell the
> backup server to not even try to redeliver the mail until I say "ok, go"
> through some means?
> 
> Thanks a lot,
> ~B
>