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Re: SMTP RFC Compliance.

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Jeff Henkels

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Jul 19, 2004, 3:14:42 PM7/19/04
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"Nathan Kodak" <Nathan Ko...@discussions.microsoft.com> wrote in message
news:A93511B2-73B5-4A9F...@microsoft.com...
> I saw a post on this subject already, but the last part of it was never
replied to, so here it is again, in hopes of recieving an answer.
>
> Is the Microsoft IIS 5/6 SMTP Server RFC1123 5.2.17 compliant? In case you
are unsure, this RFC compliance deals with Domain Literals.
>
> When using http://www.dnsreport.com to test my DNS/Email/Web workings, I
recieve a warning from our backup MX stating that it does not accept domain
literals.
>
> WARN: One or more of your mailservers does not accept mail in the domain
literal format (user@[0.0.0.0]). Mailservers are technically required
RFC1123 5.2.17 to accept mail to domain literals for any of its IP
addresses. Not accepting domain literals can make it more difficult to test
your mailserver, and can prevent you from receiving E-mail from people
reporting problems with your mailserver. However, it is unlikely that any
problems will occur if the domain literals are not accepted.
>
> smtp.intraforce.com's postmaster@[xx.xx.xx.xx] response:
> >>> RCPT TO:<postmaster@[xx.xx.xx.xx]>
> <<< 550 5.7.1 Unable to relay for postmaster@[xx.xx.xx.xx]
>
> Please advice.

As far as I know, the IIS mail server doesn't claim to be compliant with
that part of RFC1123. For what it's worth, Exchange Server isn't compliant
either. In practical terms, this non-compliance isn't an issue -- no one
really uses domain literals.


Kodak@discussions.microsoft.com Nathan Kodak

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Jul 19, 2004, 4:18:04 PM7/19/04
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Actually, Exchange Server IS compliant with the right configuration. You just have to add the "@[xx.xx.xx.xx]" into a Recipient Policy, and add your addresses as "Custom" with the address of "postmaster@[xx.xx.xx.xx]" or "abuse@[xx.xx.xx.xx]" and type SMTP (choosing SMTP and trying to add the address WON'T work).

I like to have ZERO warnings or errors in my testing though, so if ANYONE can give me the answer on how to do this, or if it is simply NOT possible that would be great. If it is truely NOT possible, I would like it to be a MS rep that breaks that news to me, thanks.

Nathan

Harland Adelaars

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Jul 27, 2004, 1:54:24 PM7/27/04
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Is the Microsoft IIS 5/6 SMTP Server RFC1123 5.2.17 compliant?

Yes it is, just create a domain name [xx.xx.xx.xx] with adsutil.vbs, you
can find this script in c:\inetpub\adminscripts

start the following commands:

adsutil create smtpsvc/1/Domain/[tcp/ip] "IIsSmtpDomain"
adsutil set smtpsvc/1/Domain/[tcp/ip]/RouteAction 4098
adsutil set smtpsvc/1/Domain/[tcp/ip]/RouteActionString ""
adsutil set smtpsvc/1/Domain/[tcp/ip]/RouteUserName ""
adsutil set smtpsvc/1/Domain/[tcp/ip]/RoutePassword ""
adsutil set smtpsvc/1/Domain/[tcp/ip]/AuthTurnList ""

That's it...

Regards,
Harland Adelaars.


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