Fw: Mail server

FYI
----- Original Message ----- 
From: "Will Glynn" <delta407-w/dECf2maCVWk0Htik3J/[email protected]>
To: <[email protected]>
Sent: Monday, September 22, 2003 5:15 PM
Subject: Mail server


> Hi. I recently acquired a new system, tachyon.lerfjhax.com, which is
designed
> to be take over a number of tasks that are currently handled by
> longhorn.lerfjhax.com. Among them is the virtual mail system that is
> currently holding all of the domains in invisiblenet.net.
>
> Why? Easy. A comparison:
>  - longhorn.lerfjhax.com can push ~25 KB/s, meaning its theoretical
maximum
>    outbound data transfer is 60 GB/mo.
>  - The latency from longhorn.lerfjhax.com to its ISP (2 hops) is ~40 ms.
>  - tachyon.lerfjhax.com is co-located on a 10 megabit pipe, meaning its
>    theoretical maximum outbound data transfer is 2400 GB/mo.
>  - The latency from tachyon.lerfjhax.com to its ISP (3 hops) is ~1.2 ms.
>
> Sound like a good deal? Worth a few hours of downtime? :-)
>
> I wrote up exactly what I need to do -- and in what order -- and posted it
to
> <http://www.lerfjhax.com/43.0.html>. I will keep you posted of my
progress,
> and no changes will be made to the current mail setup until Phase 3.
>
> Anyway, what I need to tell you:
>  - invisiblenet.net must have tachyon.lerfjhax.com added as a backup MX,
>    probably would benefit from having newmail.invisiblenet.net as an alias
to
>    tachyon.lerfjhax.com, and must be prepared to swap the primary/backup
MX
>    records (to make tachyon primary and longhorn secondary) on the day of
the
>    switch
>  - invisiblenet.net will face a moderate amount of downtime (a couple
hours,
>    I guess?) while maildirs are frozen and the data copied. No data --
>    account settings, passwords, e-mail, or otherwise -- will be lost.
>
> --Will
>
>

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