Security

Enabled by default: SMTP Tarpit in Exchange Server 2007

From a recent discussion, and something I’ve been wanting to post about for a while: SMTP tarpitting is enabled by default on Receive Connectors in Exchange 2007 (and Exchange 210). What is SMTP tarpitting? It’s the process of introducing a delay in SMTP connections from hosts that are suspected of inappropriate SMTP behavior – for […]

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How To Allow Relaying in Exchange 2010 and Exchange 2007

In Exchange Server 2003, you can allow anonymous SMTP hosts to relay mail by adding their IP address(es) in SMTP Virtual Server Properties | Access tab | Relay. Hosts that require anonymous relay capability include application servers and devices such as copiers, which scan documents and send them as email attachments. Figure 1: Controlling relay […]

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Install anti-spam agents on Hub Transport server

If you’re using Exchange Server 2007 in a topology with an Edge Transport server, the anti-spam agents – Connection Filtering, Content Filter Hub Transport node in the EMC. After the antispam agents are installed, you can see the Anti-spam tab in Organization Configuration | Hub Transport node in EMC. If your console was open during […]

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List users with automatic email forwarding enabled

Here’s a script written in response to a newsgroup post today on microsoft.public.exchange.admin. Exchange Server allows you to automatically forward inbound mail for one recipient to another recipient. You can forward messages to the alternate recipient, without delivering a copy to the original recipient (effectively redirecting inbound mail for the recipient), or deliver messages to […]

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