>importandomain.com IN MX 10 myisp.com.
> IN MX 20 backup.myisp.com.
>backupmail IN A x.x.x.x
>
>
>I would run backup.myisp.com and backupmail.importantdomain.com at a remote
>location using DSL.
so here all you do is have redundancy of mail reception. For all your hosted or
downstream mail domains, run 2 IMGates as MX 10 and 20, put the second one offsite on
the end of your DSL line.
>If my ISP burned down, backupmail.importantdomain.com would make a ETRN
>connection to backup.myisp.com and get the mail. My client would then
>connect to backupmail.importantdomain.com to get their mail.
The client 1) runs his own mail server or 2) you host his mailbox server?
If the former, then with MX 10 burned down, the client's mail piles up at MX 20 relay
hub. The client just has to have his mail server ETRN to your MX 20 and you have to
tell MX 20 the ip of the client, and his mail server picks up its mail from your MX 20.
If the latter, then you have to have a backup mailbox server (meaning a 2nd Imail
license) which you can't do with Imail facilities alone but need some kind of
clustering solution for failover.
>Any way to make the ETRN and POP machine run on a single computer?
of course, Imail does this.
They have nothing to do with each other: ETRN is SMTP protocol for moving mail around
and POP is POP3 for reading mailboxes.
Len
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