Re: [cobalt-users] Moving to new NOC

[shimi <shimi@xxxxxxxxxxxxxxxx>]

On Tue, 8 May 2001, Rodolfo J. Paiz wrote:

> OK, everybody, I'm on countdown now. We move to our new digs (well, our 
> first own digs) next Monday night. I've got my DNS timeout settings cranked 
> down to 1 hour already, and will let them sit this way until Sunday when 
> I'll change them to 1 minute.
> 
> The new NOC is now live and behind a firewall. I can put servers into it 
> without a problem, so I'm going to use my notebook as a server for 24 hours 
> while I move the big one and verify that everything works well.
> 
> Apache was not a problem.
> DNS is not a problem.
> The registries are, well, a problem but I'm working on them.
> 
> However, what I have not figured out is how to avoid mail from being 
> interrupted. From what I see, I have to do the following:
> 
> * Install and configure sendmail on my notebook (mail2.domain.com) to 
> receive mail for all my domains.
> 
> * Create an A and an MX record with a higher cost to my notebook for each 
> domain.
> 
> So far, so cool. Now when the main server suddenly goes off-line, mail will 
> be routed to mail2, the backup "server".
> 
> But... how do I tell mail2 not to do local delivery, but rather to relay 
> only and to queue only so that it collects mail, then waits until it can 
> actually get to the better mailserver (smtp.domain.com) and sends it all 
> the queued mail when smtp.domain.com resumes operations?
> 
> I hope the question is clear; thanks, y'all.

unless ur downtime will be higher than 4 hours... nothing to worry about.
mailservers try to deliver for 4 hours and only if unsuccessful by then,
sends a warning message back, and STILL trying to deliver for 5 days.

This has not been tested though, so don't count on my words :)
> 
> 
> --
> Rodolfo J. Paiz
> rodolfo@xxxxxxxx
> 

- shimi