IIS and SMTP - Relay Problem

Author

Relay Problem

richard.markiewicz@eshareuk.com

2006-07-14, 7:24 am

Hi All

First of all - I hope this is the correct group. Sorry if not.

I have inherited a medium-sized sharepoint server farm from the
previous admin here.

The sharepoint server runs an SMTP server on IIS. Generally, all emails
that Sharepoint sends get delivered fine. However, I have two relaying
problems - visible by Event ID 4006 warnings in the error log.

The first is that I can't deliver to AOL addresses. If I telnet into
the IP address I get from the event log on port 25, I can see that AOL
doesn't accept emails with a reverse DNS lookup. Our DNS hosting
company doesn't support reverse DNS lookups. However, this isn't really
a problem.

However - Sharepoint can't deliver messages within my own domain.
Fortunately 99% of our users are external to our domain. However, this
is getting annoying - my colleagues and I have to use hotmail addresses
to get email delivered from Sharepoint.

The event ID 4006 can't deliver to 192.168.1.10 - the IP address of my
domain controller. All the DC runs is active directory and DNS.

Can anyone hold my hand through resolving this issue? I don't really
know where to start....

Many, many thanks

Richard

Ron Hinds

2006-07-20, 7:22 pm

<richard.markiewicz@eshareuk.com> wrote in message
news:1152868950.121775.77220@p79g2000cwp.googlegroups.com...
> Hi All
>
> First of all - I hope this is the correct group. Sorry if not.
>
> I have inherited a medium-sized sharepoint server farm from the
> previous admin here.
>
> The sharepoint server runs an SMTP server on IIS. Generally, all emails
> that Sharepoint sends get delivered fine. However, I have two relaying
> problems - visible by Event ID 4006 warnings in the error log.
>
> The first is that I can't deliver to AOL addresses. If I telnet into
> the IP address I get from the event log on port 25, I can see that AOL
> doesn't accept emails with a reverse DNS lookup. Our DNS hosting
> company doesn't support reverse DNS lookups. However, this isn't really
> a problem.
>
> However - Sharepoint can't deliver messages within my own domain.
> Fortunately 99% of our users are external to our domain. However, this
> is getting annoying - my colleagues and I have to use hotmail addresses
> to get email delivered from Sharepoint.
>
> The event ID 4006 can't deliver to 192.168.1.10 - the IP address of my
> domain controller. All the DC runs is active directory and DNS.
>
> Can anyone hold my hand through resolving this issue? I don't really
> know where to start....
>
> Many, many thanks
>
> Richard
>

Here's one place to check. You didn't specify which OS so I'm going to give
you instructions for the one I'm familiar with - Windows 2000. 2003 should
be similar... Run Internet Services Manager and select the SMTP server in
question. Right-click and go to Properties, then the Access tab. The last
button (Relay) is under Relay Restrictions at the bottom of the tab. Click
it and at the bottom of the Relay Restrictions dialog is a check box that
reads "Allow all computers which successfully authenticate to relay,
regardless of the list above". Check this box. Everyone who is going to use
the SMTP server needs to have a valid login/password that is the same as the
one defined in their mail client.

richard.markiewicz@eshareuk.com

2006-07-21, 7:23 pm

Thanks for the reply Ron.

It is 2003. Relaying was already set-up like that, I had been playing
with these options extensively.

To solve the problem I needed to add a new mail domain. Whoever set up
the SMTP server didn't change the name for the default domain - so it
was computername.domainname.com. I realised this was wrong when I
discovered that emails sent to richard@computername.domainname.com went
through ok.

So I set up an alias domain (domainname.com) and now emails all go
through to the drop box :D

Many thanks again,

Richard