Questions and Answers
Lesson 1 Review
Page 10-19
| 1. | You are a network administrator, and you want to test connectivity between a host on your network and a new Exchange Server 2003 server that has just been configured. You want to ensure that e-mail messages to that server can be encrypted. You can ping the server by host name. You connect to port 25 on the server. What command should you use?
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| 2. | You are the administrator of the Contoso ISP. You have two SMTP servers configured as smart hosts: smart1.contoso.com and smart2.contoso.com. Your ISP manages DNS records for Northwind Traders, whose Exchange Server 2003 server has the FQDN mailserv.nwtraders.com. Northwind Traders has a permanent connection to your ISP. How should you configure the MX records for this setup in DNS?
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| 3. | You administer your company's Exchange Server 2003 organization. Your company has two e-mail domains. You want to control filters, relay restrictions, message formats, outbound security, and smart host options separately for each domain. What technique would you use?
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| 4. | You administer an Exchange Server 2003 server. You want this server to act as a smart host. Your organization has a single SMTP domain. How do you configure your server?
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| 5. | You want your Exchange Server 2003 organization to have smart host capability. How should you configure a virtual server to provide such capability, and how is the configuration implemented? | |
Answers
| 1. | The correct answer is c. |
| 2. | The correct answer is b. |
| 3. | The correct answer is a. |
| 4. | The correct answer is b. |
| 5. | You configure the SMTP virtual server as an inbound relay host. You can then configure other SMTP servers to use the Exchange virtual server as their smart host and forward all outbound messages to the virtual server. You implement this by configuring Relay Restrictions on the virtual server's Access tab. |
Lesson 2 Review
Page 10-34
| 1. | You administer an Exchange Server 2003 server with a dial-up connection to an ISP. You want your ISP to hold your e-mail until your Exchange server connects. You then want all queued e-mail to be delivered to your Exchange server. How do you configure this? | |
| 2. | You want your Exchange Server 2003 organization to have smart host capability. How should you configure a virtual server to provide such capability, and how is the configuration implemented? | |
| 3. | You administer an Exchange Server 2003 organization in a school. Staff members are permitted to send Internet e-mail, but students are not. How do you prevent students from receiving and sending Internet e-mail? | |
| 4. | How do you prevent unauthorized users from propagating junk e-mail through your Exchange organization?
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Answers
| 1. | You configure your SMTP connector to request ETRN/TURN from the ISP server. This will cause your Exchange server to send the etrn command to the ISP on connection. The etrn command pulls queued e-mail from the server that holds it. |
| 2. | You configure the SMTP virtual server as an inbound relay host. You can then configure other SMTP servers to use the Exchange virtual server as their smart host and forward all outbound messages to the virtual server. You implement this by configuring Relay Restrictions on the virtual server's Access tab. |
| 3. | You configure the SMTP connector so that only approved users or groups can send e-mail outside of the school. You restrict user accounts from sending Internet e-mail by navigating to Connectors in Exchange System Manager, right-clicking the connector that you want to restrict, clicking Properties, and specifying the name of the sender or senders in the Accept Messages From or Reject Messages From area on the Delivery Restrictions tab. In this case, the connector is configured to accept messages from staff users and to reject messages from student users. |
| 4. | The correct answer is c. |
Lesson 3 Review
Page 10-51
| 1. | In what format does an Internet client send a message, and how does SMTP convert it? In what format does a MAPI send a message, and how does SMTP convert it? | |
| 2. | What type of virtual server does Exchange Server 2003 use to support WebDAV?
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| 3. | In what ways are POP3 and IMAP4 similar, and how do they differ? | |
Answers
| 1. | Messages sent by Internet clients are sent in MIME format, and no message conversion takes place. Messages sent by MAPI clients are sent in RTF, and SMTP converts this to MIME format. |
| 2. | The correct answer is a. |
| 3. | Both POP3 and IMAP4 allow clients to access their mail. Neither can send mail; this function is implemented by SMTP. The difference between these protocols is where clients manipulate their messages. IMAP4 allows a client to access and manage mail on a server. POP3 allows a client to download mail from an inbox on a server to the client computer. |
Case Scenario Exercise: Requirement 1
Page 10-53
| 1. | Management has given you a list of all the staff members that are allowed to send and receive Internet mail. How do you now ensure that these employees, and only these employees, can send and receive external e-mail, without restricting the ability of all employees to send and receive internal e-mail? | |
| 2. | You are currently training an assistant administrator. She asks you why you configured delivery restrictions on an SMTP connector and not on an SMTP virtual server. What do you tell her? | |
Answers
| 1. | If you have not already done so, you first need to create an SMTP connector and configure it to use your default SMTP virtual server as a bridgehead. You navigate to this SMTP connector in Exchange System Manager. In the Properties dialog box, you access the Delivery Restrictions tab, specify that messages from everyone are rejected, and then add the individual user accounts of the users that are permitted to send and receive external e-mail in the Accept Messages From box. You cannot add security groups to this box, but you may want to put these users in a global security group for other reasons, such as auditing. |
| 2. | You can configure user-based delivery restrictions on an SMTP connector and computer-based delivery restrictions on an SMTP virtual server. If you configure restrictions based on computer accounts, then the users who should be able to use external e-mail might not have that facility if they logged on at another computer. |
Case Scenario Exercise: Requirement 2
Page 10-53
| 1. | You send an e-mail message to Kim Akers, an Exchange Full Administrator at Consolidated Messenger. Kim does not get the message. The message is short and has no attachments. You receive an NDR saying that your message was rejected because it came from an unsafe source. You need to send mail to Kim. How do you solve the problem? | |
| 2. | You have disabled relaying on your default virtual server, but this has not solved your open relaying problem. What else do you need to check? | |
Answers
| 1. | Your problem goes further than not being able to send mail to Kim. An organization can appear on an e-mail block list because other, less reputable organizations are relaying junk e-mail through it. In the short term, you can ask Kim to place the Baldwin Museum of Science's domain on an exception list so you can e-mail her, but you need to sort out the relaying problem, otherwise other organizations will also add your domain to their block lists. Because you have IMAP4 or POP3 clients, you cannot disable relaying. However, you need to ensure that only these clients can relay, and nobody else. You can configure relaying on your default SMTP virtual server so that only users with IMAP4 and POP3 clients can relay. Alternatively you can disable relaying on your default SMTP virtual server, create an additional SMTP virtual server, permit relaying on that virtual server, and permit only IMAP4 and POP3 clients to access that server. |
| 2. | If an SMTP connector permits relaying, then this overrides the settings on its bridgehead server. Access the SMTP connector's Properties dialog box. On the Address Space tab, uncheck Allow Messages To Be Relayed To These Domains. |
Case Scenario Exercise: Requirement 3
Page 10-54
| 1. | You are asked to amend your DNS configuration so that name resolution over the Internet is handled by your DNS servers and not by the ISP. What DNS records do you need to change? | |
Answers
| 1. | Because your DNS servers already perform internal name resolution, there should already be MX records for all your Exchange Server 2003 servers in your DNS zone file. Because you have a permanent connection to your ISP, your ISP's DNS zone file will contain an MX record for your bridgehead Exchange Server 2003 server. You need to inform your ISP and request that this record be removed. (You also need to configure a stand-alone DNS server with a standard primary zone in your DMZ and alter your root hints files, but this information is not required by the question.) |
EAN: 2147483647
Pages: 221