Re: DNS or Smart host

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Chris is correct here.

I try and avoid Smarthosts if at all possible. If there are message delay
problems, you need to fix DNS and identify the cause of the delays.

In all likelihood, your Smarthost could be seeing the same message delay
problems. However, you don't see those delays any more because you are just
dumping the messages to the Smarthost, which accepts them right away.

--
Ben Winzenz
Exchange MVP
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"Chris Priede" <priede@xxxxxxxxx> wrote in message
news:%23LD5rHgFGHA.2912@xxxxxxxxxxxxxxxxxxxxxxx
> Hi,
>
> prg74 wrote:
>> What are the benefits / drawbacks of using either of
>> these methods of mail delivery in exchange?
>> Used DNS for sometime and was getting delays quite
>> frequently. Switched to use a smarthost and all is well...
>
> With direct delivery (DNS), Exchange will deliver your email to the
> recipients itself. For example, if you are sending mail to
> someone@xxxxxxxxxxxxx , your Exchange server will figure out which servers
> receive mail for microsoft.com and connect to them directly. This is
> preferable if you have the DNS set up right -- for example, not having a
> consistent PTR record for the public IP address used could result in your
> mail being tagged as spam or rejected.
>
> With smart host, all mail that isn't local will be handed over to the
> designated host, which will then figure out what to do with it. You are
> probably using your ISP's server for this.
>
> The benefit is that it is _probably_ set up correctly in DNS (making it
> the best choice if you don't know how or can't get the ISP to cooperate),
> but there are some downsides, too. It is another point of failure and
> takes some control out of your hands (e.g., if another customer sends out
> a mass mailing and gets the shared mail server temporarily blacklisted,
> your mail will be affected as well).
>
>
> --
> Chris Priede
>


.

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