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SMTP and IIS
View the book table of contents
Author: Kurt Hudson
Published: November 1998
Copyright: 1999
Publisher: 29th Street Press
 


MODULE QUIZ

The following questions test your knowledge of procedures, vocabulary, features, and syntax.
  1. After installing the SMTP Service, users complain that although they are able to send e-mail, they cannot check their mailboxes to get their own e-mail. What should you check to fix the problem? (Choose the best answer.)
    1. Check the Badmail directory for undeliverable messages
    2. Ensure that the optional Microsoft Mailbox Service is installed
    3. Verify that port 473, the default checkmail port, is enabled
    4. The problem cannot be fixed with SMTP alone

  2. A developer wants to create a set of Web pages that lets a user type a message in a form and mail it to techsupport@mail.mycorp.com. The form creates a text file with the proper SMTP headers. In which folder should the file be copied?
    (Choose the best answer.)
    1. Mailroot\Delivery
    2. Mail\Queue
    3. Mailroot\Pickup
    4. Mailroot\Queue

  3. MyCorp, Inc., has an office in Dallas and another in New York, each with its own Microsoft SMTP server. Corporate spies have set up “packet sniffers” to capture any e-mail sent between the two cities. What would help thwart the spies’ efforts to read the captured messages? (Choose the best answer.)
    1. Require Windows NT Challenge/Response Authentication on each server
    2. Use IP address restrictions
    3. Require TLS on each server, and use a 128-bit key
    4. Change the default port number 25 to 473 on both SMTP servers

  4. The From information in the header of an e-mail message originating from the local domain can be changed to any arbitrarily chosen e-mail domain.
    (Choose the best answer.)
    1. True
    2. False

  5. To enforce a message size-limit that e-mail clients can upload to the SMTP server, you should configure the following option: (Choose the best answer.)
    1. Maximum session size
    2. Maximum message size
    3. Maximum hop count
    4. Smart host
QUIZ ANSWERS
  1. D — The problem cannot be fixed using SMTP alone. This is not a limitation of IIS; SMTP was not designed to maintain individual mailboxes for users.
  2. C — Mailroot\Pickup. The SMTP Service continually scans this folder for text files to process as e-mail messages. Messages wait in the Mailroot\Queue folder until they can be delivered. Text files cannot be placed into the Queue folder because they lack the appropriate ID number and formatting inserted by the SMTP Service.
  3. C — Require TLS. Authentication, port number changes, and IP address restrictions would exclude other SMTP servers from interoperating with the two MyCorp, Inc., SMTP servers, but this is not what the spies are trying to do. Instead, the spies are waiting for the two SMTP servers to successfully authenticate and connect to each other, then capturing all the packets when the servers start forwarding messages to each other. Using TLS encryption scrambles the text of the messages in such a way as to make it extremely difficult to decipher their contents, so even if the packets are captured, the message contents should still be relatively safe.
  4. A. — True. On the Delivery tab of the Default SMTP Site dialog box, an administrator can enter the text of a “masquerade domain” that is automatically inserted in place of the originating domain when messages are sent from the local server. (This does not work for messages relayed from remote domains.)
  5. A — Maximum session size. Maximum message size limits are not enforced; they indicate only the SMTP server’s preferred limit. Maximum hop count only prevents the delivery of messages that have already passed through too many other SMTP servers. The Smart Host is another SMTP server to which all messages destined for remote domains are given.


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