Re: [gentoo-user] Sendmail virtusertable

["Hiren Dave" <hiren2k4@gmail.com>]

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Hi,

Thank you for your reply. Now I understant it.

TnR
Hiren

On 3/26/06, Boyd Stephen Smith Jr. <bss03@volumehost.net> wrote:
>
> On Saturday 25 March 2006 06:50, "Hiren Dave" <hiren2k4@gmail.com> wrote
> about 'Re: [gentoo-user] Sendmail virtusertable':
> > Here I have used yahoo.com domain but it can be any domain lets say
> > domain.com. My network is not connected to Internet. Still do you think
> > that the following will not work if guru.com exists and domain.com does
> > not exists physically.
>
> Here's how mail delivery normally works:
> 1. Message is composed, and sending is initiatied.
> 2. (Optional) message is handed off to a MTA, this might be local, remote
> via SMTP, or a separate part of the same application.
> 3. The domain part of each of the destination addresses is queried for an
> MX record from DNS; if no MX record exists the A record is used instead.
> 4. An SMTP connection is made to the host (MX) or address (A) and the
> message is delivered there.
> 5. The MDA on that server decides what to do with the message.  The may
> involve forwarding (going back to step 2), local delivery (THIS IS WHERE
> THE VIRTUAL USER TABLE [or equivalent] IS QUERIED), or other actions.
> 6. Once final delivery is made to a mailbox (or the mailboxes), the
> recipients use POP, IMAP, Web, mbox, maildir, and/or other methods to read
> the mail.
>
> Does that help?
>
> If you are truly isolated from the internet, you can indeed make sure that
> the DNS MX record for yahoo.com points to your MDA and deliver
> foo@yahoo.com to a local mailbox, but it involves more than just your
> virtual user table.
>
> --
> "If there's one thing we've established over the years,
> it's that the vast majority of our users don't have the slightest
> clue what's best for them in terms of package stability."
> -- Gentoo Developer Ciaran McCreesh
> --
> gentoo-user@gentoo.org mailing list
>
>

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