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Undesirable relaying - 18.Feb.2004 9:47:00 PM

mmarnell

Posts: 50
Joined: 29.Dec.2003
From: MA
Status: offline

I don't know how it happened, but if i go into my SMTP virtual server queues there are hundreds of entries of domains that are not my companies. i fear that i am allowing relaying somehow. how can i disable this feature?

I am unable to send out emails from within my organization. is this the reason for this?

how can i delete all of these queues and prevent this from happening in the future?

Thank you,
Mike

Post #: 1

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RE: Undesirable relaying - 18.Feb.2004 9:50:00 PM

mmarnell

Posts: 50
Joined: 29.Dec.2003
From: MA
Status: offline

also, when i try to look at my queues the System Manager usually stops responding and i can't access the queues at all. is there any work around for this?

mike

(in reply to mmarnell)

Post #: 2

RE: Undesirable relaying - 19.Feb.2004 8:30:00 PM

Velocat

Posts: 574
Joined: 6.Jan.2004
From: Tucson, AZ
Status: offline

You can test your server to see if it's a mail relay here:

http://www.abuse.net/relay.html

There are serveral places to test, this is just one.

(in reply to mmarnell)

Post #: 3

RE: Undesirable relaying - 19.Feb.2004 9:06:00 PM

Henrik Walther

Posts: 6849
Joined: 21.Nov.2002
From: Copenhagen, Denmark
Status: offline

Hi Mike,

Sounds like you either have an open relay or that you have experienced a SMTP Auth relay attack.

Start by reading below article in order to see, if your Exchange 2000 server has an open relay:

http://www.msexchange.org/tutorials/MF005.html

Then check below article by Vamsoft:

http://www.vamsoft.com/orf/authattack.asp

To delete all mail in all queues do the following:

- Stop the SMTP service
- Navigate to:

C:\Program Files\Exchsrvr\Mailroot\vsi 1

here you should simply delete the content of the queues folder, which I recommend you do through a command prompt, as Explorer most likely will hang.

(in reply to mmarnell)

Post #: 4

RE: Undesirable relaying - 24.Feb.2004 12:00:00 AM

dmb05

Posts: 42
Joined: 10.Mar.2003
From: CHI
Status: offline

I'm have the same problem. I read the article and check to make sure that I dont have any open realy going on, which i dont. Any ideas on what could cause this. thanks

Claud

(in reply to mmarnell)

Post #: 5