How can i stop my 2003 exchange from relaying

[gau17]

Can anyone help me stop my exchange from relaying?

 

[ncolsgk]

Remove the address from the relay field in the Default SMTP Virtual Server Properties Window > Relay tab.

 

[xmsre]

http://support.microsoft.com/kb/823157/en-us

 

[58sniper]

Can anyone help me stop my exchange from relaying?

It's disabled by default. Was there a reason for enabling it?

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[gau17]

58sniper - I know thats the weired part. But when i run a test it shows it still allows it. johnpaulrichard.com

 

[gau17]

XMSRE - I followed those steps and I did get the Unable to relay message.

Why would Outblaze prevent me from sending to a company. they say that our server is an open relay.

Thanks for everyone's help so far.

 

[DJCopa]

We have the same issue, every now and then. All our email relays through a third party Virus/SPAM filtering company. Because of this, some servers believe we are relaying - We had to get the company we were trying to email to enable the following setting on their exchange server:

Allow computers which successfully authenticate to relay

Hope this helps.

 

[gau17]

DJCopa,

Is it alway overseas? 99.9% of the time when this happens it's overseas.

I do have it set to all authenticated computers.

 

[58sniper]

Are you sure the mail is actually getting relayed, or that your server accepts it but doesn't deliver it?

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[gau17]

I think our server accepts it but does not deliver them.

 

[58sniper]

That's not relaying.

Disallow email sent to non-users:

Global Settings>Message Delivery>Properties>Recipient Filtering>Filter Recipients Who Are Not In the Directory

Then enable Recipient Filtering

Servers>[SERVERNAME]>SMTP>Default SMTP Virtual Server>Properties>General>Advanced>Edit>Apply Recipient Filter

Then apply tarpitting

SMTP tar pit feature for Microsoft Windows Server 2003

http://support.microsoft.com/kb/842851

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[gau17]

I was trying to enable this and I got this message:

connection, Recipeint, Sender ID, and Sender Filtering must manually be enabled on specific SMTP virtual server IP address assignment as they are not enabled by default.

Thank for all you help so far. I really appreciated it!

 

[gau17]

fyi - i was looking at my queue and there is alway about 10 emails in there and when i open them the From address is unspecified and to is NONE.

How can i prevent these.

 

[58sniper]

That's fine (specific SMTP virtual server.....)

Enable the recipient filtering and see if that stops them.

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[gau17]

they are still poping up. about 6-8 in the queue at any given time.

 

[58sniper]

Kill those off and see if they start reappearing.

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[gau17]

the funny thing is when i go through the exchange system mgr i do not see any in the queue.

But when I go through the explorer C:\exchsrvr\mailroot\vsi1\queue i can see them poping up. no more than 8 at a time.

Should i be concerned?

 

[58sniper]

I'd be more concerned about Exchange being on the C: drive.

Check out connection filtering. They're probably getting dropped, but you could turn on message tracking and see what's happening. All speculation without more info.

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[gau17]

Thanks again. My database is on d:\ just a habbit of typing c:\.

many thanks.