[svlug] Domain over multiple sites...

Erik Steffl erik at zasran.com
Fri Dec 12 12:32:41 PST 2014


   as far as email goes I let Google handle the hard part.

   My MX record is set to go to Google.

   The email is then fetched (fetchmail) from Google and stored and my 
IMAP server (Dovecot). This way Google also acts as a backup of my email 
(I set it to keep everything).

   Also using Google SMTP server to send email.

   This way I don't have to worry about my server staying up 100%, 
recipients thinking my mail is spam (which sometime happens if you send 
it from your computer) etc. You also get Google spam filtering (if you 
want to of course).

   You need Google apps account for this which is usually not free 
anymore but there is a way to get it for free, see (it's all up and up, 
no tricks involved):

 
http://lifehacker.com/5967336/use-google-app-engine-to-get-google-apps-for-your-domain-for-free

	erik

On 12/12/2014 01:25 AM, Michael Robinson wrote:
> Here's the situation.  I have a registered domain name, 5 static IP
> addresses, and a 6M/384K DSL connection.  The friendly outfit Eskimo
> North acts as a backup mail spooler for me.  I want to use my domain
> name and not someone else's for email.  My school email address, I
> recently graduated with a B.S in Computer Science, will go away in a
> year.  My Comcast email address may go away sooner as I might dump
> Comcast.  I host my domain at home if that isn't already clear and I
> forward email to my home account.  I'm reluctant to use one of the
> free email services like google mail instead because of privacy
> concerns.
>
> I have a single point of failure problem, the DSL.  I have battery
> backup units, but in the rare event that a power outage happens and
> lasts longer than an hour, I'm going down.  Less rare perhaps or just
> as rare, network equipment failure such as a switch failing can also
> cause an outage and typically a longer one.
>
> The SMTP standard supports re-transmission up to so many times over a
> certain period of time.  I think the period is a week.  As long as
> email I haven't received isn't time sensitive, that normally isn't a
> problem.
>
> I hope I can use cheap residential cable service to tunnel over to
> Eskimo securely so the spooler at Eskimo can then pass the email over
> to me through that tunnel.  I want my servers to detect the need for a
> tunnel and I want the establishment and tear down of a secure tunnel to
> be automated.  I hope this is straightforward for both Eskimo and my
> end.
>
> The backup spooling works exceptionally well when my mail relays are not
> accessible.  The email can't reach my relays which feed my mail hub and
> new emails can't be looked at when the DSL is out though.
>
> An approach is to sign up for Comcast Business with static IPs.
> Trouble is, I'm not really a business where $1235.16/year is a huge
> increase over $540/year for residential service where I can quit at any
> time.  Having two Internet connections via two different networks is
> good, but a power outage will take down both links fairly quickly.
>
> A risky proposition is to try an IPv6 over IPv4 tunnel...  I'm not very
> familiar with the security issues surrounding IPv6 which has no network
> address translation.
>
> Concerning power outages, I want to collect green power somehow and
> when there is an outage or when I've stored as much as I can, feed
> that power into my servers.  With enough green power to run the
> servers for 12-24 hours, I will outlast most outages.  Beyond that,
> I'll call Eskimo and inform them that I'm down.
>
>       -- Michael C. Robinson
>
>
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