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spamming on exchange 2000

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9 replies

by musebasa

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How do you stop spamming on exchange 2000?

thanks

9 replies

by r. a. caluste

create two virtual smtp servers. server1 (bind to external ip) is configured in the ff manner: no external dns, relay disabled. server2 (bind to internal ip) is configured the ff manner: external dns configured, relay enabled. users send email through the internal interface via server2. if spammers from outside try to send via server1 (which is bound to your external interface), it will not be permitted because you disabled relay and removed the external dns.

happened to me once and fixed it.

by pan 13 x

see link:
http://www.microsoft.com/technet/treeview/default.asp?Url=/technet/security/prodtech/mailexch/excrelay.asp :: Remove spaces:::
To turn off relaying completely:
To allow some kinds of relaying First, you have to turn on relaying by selecting the "Reroute incoming SMTP mail (required for POP3/IMAP4 support)" radio button. Once you've done that, there are two primary mechanisms for controlling relaying: The Routing list shows which domains your server will accept SMTP mail for. Inthe example, ratest.com and huntsville.ratest.com are listed as inbound, meaning that the IMS will accept mail and attempt to deliver it locally. The robichaux.net domain is explicitly listed as a relay domain; that means that it was manually added (using the Add... button) as a domain for which I want to accept SMTP mail, no matter what.
The Add?, Edit?, and Remove buttons let you change which domains appear in the Routing list, as well as what the IMS will do with mail for those domains: block it, accept it for relaying, or treat it as inbound mail.

by pan 13 x

The Routing Restrictions button is where you can do what most administrators want to do: allow legitimate clients to relay while blocking spammers. By default, all of the controls in this dialog are turned off; you'll have to set the specific restrictions you want to enforce.
If you want any client who logs on (e.g. for POP3 or IMAP4 access) to be able to relay, check the "Hosts and clients that successfully authenticate" checkbox. Note that by requiring SMTP authentication in conjunction with this option, you can allow SMTP servers?not just clients?to relay through your server. To allow specified IP addresses?internal or external?to relay, check the "Hosts and clients with these IP addresses" checkbox, then use the Add, Edit, and Removebuttons to build the list of IP addresses from which you want to accept relay traffic. Remember that this checkbox controls relaying when you have selected the radio dial for "Reroute incoming SMTP ..." in the Routing tab. You should normally check this box; doing so will prevent relaying. If you leave it unchecked, your server is open for relay. If you want to allow relaying only from clients that connect to a particular IP address on your server, check the "Hosts and clients connecting to these internal addresses" checkbox.To stop a particular group of hosts or clients from ever relaying mail, put their IP addresses and netmasks in the "Specify the hosts and clients that can NEVER route mail" list.

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