Have postfix up and running as backup mx. :)
Highest Regards,
Rodney
www.rcrnet.net
918-358-1111
----- Original Message -----
From: "Jeff Adams" <[EMAIL PROTECTED]>
To: "sambar List Member" <[EMAIL PROTECTED]>
Sent: Thursday, March 13, 2003 8:00 PM
Subject: [sambar] relay {13}
> Danny,
>
> Rodney is not a backup server in the sense that he provides mail services
> in the event the primary server is unavailable - he is just a backup mail
> exchanger. Put simply, store and forward only. While the primary server
> is down, the customers have no access to their e-mail; no POP, no SMTP.
By
> using different priority levels, mail should (there are exceptions) always
> default to the primary. The sending SMTP should check the next priority
> SMTP for delivery if the primary does not respond.
>
> One reason for having a backup mail exchanger is to control the retries
> yourself instead of relying on other servers to retry delivery. For
> example, I know of several admins who have cut down delivery retries to
> four hours or less (by decreasing the delay between retries and/or the
> number of retries). In such a case, if the primary is down for a longer
> period, the mail is not delivered (the sender should get a failure
notice).
>
> -Jeff
>
> At 07:25 PM 03/13/2003 -0600, Danny Mallory wrote:
>
> >This is the obvious solution for getting the mail Rodney, and getting the
> >mail from Rodneys server back to the primary. But some of my points are
> >not being understood... Here is the big question.. Is Rodney really a
> >backup server? Where do the customers pop3 their mail from while the
> >primary is down.. As this is a DNS entry a/cname entry your either going
> >to one or the other or your using a round robin in DNS.. But is nothing
> >dynamic like MX records.. I assume they would always be pointing to the
> >primary mail server to receive their mail.. Which means.. the customers
> >get errors because the primary mail server is unavailable.. So... Why
> >worry about it at all.. Let the smtp senders retry it until the primary
> >guy comes back up.
> >
> >Danny
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>
>
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