Exchangepedia Top 10

Renew self-signed certificates in Exchange 2010 and Exchange 2007

In Exchange 2007 and later, Exchange Setup creates a self-signed certificate to protect communication with Exchange services such as SMTP, IMAP, POP, OWA, EAS, EWS and UM. Exchange’s self-signed certificates meet an important need – securing communication paths for all Exchange services by default. The self-signed certificate meets an important need – securing communication paths […]

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Set Message Size Limits in Exchange 2010 and Exchange 2007

In Distribution Groups and maximum recipients per message, we looked at how the maximum recipients per message settings are treated differently by Exchange Server 2010/2007 and Exchange 2003/2000 when sending to Distribution Groups. Message size limits are an important mechanism to control mailbox sizes, guarantee service availability, and protect from potential DoS attacks. Another commonly […]

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Exchange Server Transport error: 452 4.3.1 Insufficient system resources

In my hotel room in Orlando, getting ready for an Exchange 2007 transport presentation tomorrow morning at TechMentor. When trying to telnet to the SMTP port of an Exchange 2007 Hub Transport server, I got the following error: 452 4.3.1 Insufficient system resources Not a good thing the night before a presentation – Murphy’s law […]

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Exchange 2007 Content Filter: How to move messages to Junk Mail folder

You’ve setup Exchange Server 2007, and configured the shiny new Content Filter agent (CFA), which is more than just a rewrite of the equally loved and hated Intelligent Message Filter (IMF) from Exchange Server 2003. How do you configure it? Spam Confidence Level (SCL) Thresholds in Exchange 2007/2010 The CFA has the following three thresholds, […]

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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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Bulk mailbox-enabling users using Exchange Shell in Exchange 2010 and Exchange 2007

In Exchange Server 2007: Bulk creation of mailboxes using Exchange Management Shell, I wrote about how to bulk create mailboxes (including user accounts) from a CSV/text file. This post is in response to readers who asked for a way to mailbox-enable existing user accounts. Bulk mailbox-enabling users using the EMC The EMC allows you to […]

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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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HOW TO: Reconnect a mailbox to another user

“How do I reconnect a mailbox to another user?” is a question I’ve come across enough number of times that it makes sense to list the steps here and include a video demo. Scenario: UserA has a mailbox. User leaves the organization. UserB joins. You need to create a new user account for UserB, and […]

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New user does not show up in GAL

Scenario: You’ve created a new user (or any Exchange recipient that should show up in Exchange Address Books/GAL), but the recipient does not show up in the GAL in Outlook. Are you using Outlook 2003/2007 in Cached Mode? If yes, login using Outlook Web Access and try to send the user an email. Does the […]

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HOW TO: Export all email addresses from a domain

Background: The Active Directory Users & Computers (ADUC) UI lets you list the mail column for each object, which displays the default (SMTP) email address for objects. You can export the list from ADUC to a CSV/txt file. However, any additional email addresses in the proxyAddresses attribute are not exported. There’s no GUI interface (in […]

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