SMTP

Exchange Server 2007: Managing And Filtering Anti-Spam Agent Logs

Exchange 2007 includes a number of anti-spam agents to filter spam. The anti-spam agents log their actions in (anti-spam) agent logs. The default agent log locations: Exchange 2010: \Exchange Server\V14\TransportRoles\Logs\AgentLog Exchange 2007: \Exchange Server\TransportRoles\Logs\AgentLog Agent Log Configuration You can’t change the agent log location. Here are the available config options: Enable/Disable agent log: On transport […]

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Send as alternate email address in Outlook and Exchange

This is one of the more frequently asked questions in different forums and still a major annoyance – how do I send as an alternate address (aka proxy address or alias)? In most organizations, users have multiple email addresses to meet business requirements such as multiple business units, business names and domain names, mergers, acquisitions […]

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How to turn off Back Pressure on Exchange Server

In Exchange Server Transport error: 452 4.3.1 Insufficient system resources we learned how the Back Pressure (Previous versions: Exchange 2010 | Exchange 2007) feature monitors resource consumption on Exchange Server and stops accepting new message submission if it’s low on resources. Update: In Exchange 2013, when the Transport service on a Mailbox server or an […]

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Add additional email addresses to a mailbox

In Exchange 2010/2007, you can use Email Address Policies to generate email addresses for your recipients (mailbox users, mail users, distribuiton groups, public folders, etc.). In Exchange 2003/2000, this was done by Recipient Policies. Policies are a great way to assign standardized email addresses across your organization – for example: <firstinitial><lastname>@<domain>. Users frequently request additional […]

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A Late New Year’s Resolution: Do Not Resolve Anonymous Senders

It’s probably a little late to make another New Year’s resolution, but I’ll try to convince you to make one nevertheless. By default, when an internal/authenticated user sends you a message, you see the user’s display name (for example Joe Adams) in Outlook/OWA and other email clients. Messages from unauthenticated senders, including those from Internet […]

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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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Message Tracking from the command line in Exchange 2010 and Exchange 2007

I’ve forever envied folks (including some colleagues— you know who you are… ) on the Linux/Unix side of things who were able to parse text log files generated by MTAs like Postfix/SendMail/EXIM in a fraction of the time it takes one to fire up Message Tracking Center on Exchange and search for a message. I […]

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Logging SMTP protocol activity

Like many of my posts, this one also starts with “By default,… “. Like many folks, I’m always curious about the defaults used for almost everything in Exchange/SMTP (and IIS, Windows, AD et al), and at times intrigued by the choices made. One of my pet peeves has been about how installing Exchange changes the […]

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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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Address Literals and Microsoft Exchange

RFC 2821 specifies how address literals can be used to reach recipients – particularly useful when DNS resolution doesn’t work for a particular domain or host. This is a literal form of the address which can be used as an alternative to the domain name. For IPv4 addresses, the address literal format is localpart@[1.2.3.4] – […]

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