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The Maintenance tab, shown in Figure 7-15, offers some important options for managing Outlook Express. You can review the available options concerning whether Outlook Express deletes messages from your Deleted Items folder when exiting, removes the deleted messages on an IMAP server, and compacts your message files to save space. The default handling method for news messages is also configured on this tab. The default settings are usually best, but read through these options to see if there is anything you want to change. You can choose to clean up messages in order to conserve disk space, and you might want to change the location of the store folder (where your mail and news messages are kept) so it is easier to find them and back them up. You might want to click the Store Folder button to see where your files are located, deep within the Documents And Settings folder.

Network Monitor Capture Utility (Netcap.exe) is a command-line Support Tool that allows a system administrator to monitor network packets and save the information to a capture (.cap) file. On first use, Network Monitor Capture Utility installs the Network Monitor Driver. You can use information gathered by using Network Monitor Capture Utility to analyze network use patterns and diagnose specific network problems. For more information about Network Monitor Capture Utility, click Tools in Help and Support Center, and then click Windows Support Tools.

This diagnostic tool displays information about Domain Name System (DNS) servers. To use NSLookup, you must first install the TCP/IP network protocol. For more information about Nslookup and DNS, see Windows XP Professional Help and Support Center. Also, see Windows 2000 DNS in the TCP/IP Core Networking Guide of the Microsoft Windows 2000 Server Resource Kit and Active Directory Diagnostics, Troubleshooting, and Recovery in the Distributed Systems Guide of the Microsoft Windows 2000 Server Resource Kit.

7

You can use PathPing (Pathping.exe) to troubleshoot IP connectivity issues. PathPing is a command-line tool that traces network routes. It combines features of Ping (Ping.exe) and Trace Route (Tracert.exe) with features not found in either tool. PathPing sends network packets to each router on the way to a final network destination IP address, and then reports information as the packets travel from one router to another. (This point-to-point travel is also referred to as a hop.) Because PathPing shows the degree of packet loss across router segments or links, you can use it to identify routers or links that might be congested and cause network problems. PathPing first displays the IP addresses of the destination and each router that it crosses. When the packets reach their destination, PathPing computes and displays a summary of network hop statistics. In the following example, the loss rate is displayed as the percentage value at the far right, preceding the | symbol. The following is a PathPing report.

Tracing route to rly-wxp-pro [7.54.1.196] over a maximum of 30 hops: 0 rly-srv [172.16.87.35] 1 tstroute1 [172.16.87.218] 2 tstroute2 [192.168.52.1] 3 tstroute3 [192.168.80.1] 4 tstroute4 [7.54.247.14] 5 rly-wxp-pro [7.54.1.196] Computing statistics for 125 seconds... Source to Here This Node/Link

Part VI:

Figure 7-15. Use the Maintenance tab to configure how Outlook Express handles downloaded mail and news messages.

Hop RTT Lost/Sent = Pct Lost/Sent = Pct Address 0 rly-srv [172.16.87.35] 0/ 100 = 0% | 1 41ms 0/ 100 = 0% 0/100 = 0% tstroute1 [172.16.87.218] 13/ 100 = 13% | 2 22ms 16/ 100 = 16% 3/100 = 3% tstroute2 [192.168.52.1] 0/ 100 = 0% | 3 24ms 13/ 100 = 13% 0/100 = 0% tstroute3 [192.168.80.1] 0/ 100 = 0% | 4 21ms 14/ 100 = 14% 1/100 = 1% tstroute4 [7.54.247.14] 0/ 100 = 0% | 5 24ms 13/ 100 = 13% 0/100 = 0% rly-wxp-pro [7.54.1.196] Trace complete.

Analyzing the preceding PathPing report, the link between 172.16.87.218 (hop 1) and 192.168.52.1 (hop 2) has a 13 percent drop-packet rate. Dropped packets represent data that needs to be retransmitted, which adversely affects data throughput. All other links appear to be functioning normally with 0 percent packet-loss rates. Packet loss between the first and second hops could indicate heavy network traffic, congested routers, or slow links. For information about PathPing (as well as the related Ping and Trace Route tools), see Configuring TCP/IP on the companion CD and 24, Configuring IP Addressing and Name Resolution, in this book, and Windows XP Professional Help and Support Center. Also, see the TCP/IP Core Networking Guide of the Microsoft Windows 2000 Server Resource Kit.