Technical data

Configuring and Managing the POP Server
18.5 Solving POP Problems
18.5.2 Using POP Extension Commands
For troubleshooting purposes, you can simulate a POP client and enter the XTND
commands listed in Table 18–3 to obtain information.
Table 18–3 POP Extension (XTND) Commands
Command Action
XTND CLIENT Logs POP client information (if the client supplies it). Helpful
for troubleshooting if you use POP with a variety of POP
clients that identify themselves.
XTND LOGLEVEL Dynamically adjusts POP logging level. Supported levels are
INFORMATIONAL (default), ERROR, THREAD, and DEBUG.
XTND STATS Displays POP statistics in the following format:
+OK Statistics follow
Version Number : TCPIP X5.0, OpenVMS V7.1 Alpha
Logging Level : DEBUG
Current Time : 1999-04-06 06:13:46
Start Time : 1999-04-04 06:42:17
CPU Seconds : 7.89 (0 mins, 7 secs)
Current Threads : 1
Total Threads : 6
Max Threads : 1
Too Many Threads : 0
Normal Disconnects : 5
Abnormal Disconnects : 0
Client Timeouts : 0
Blocked Socket Count : 0
Retrieved Messages : 4
Retrieved Octets : 1102
Average Octets : 275
Minimum Octets : 222
Maximum Octets : 319
Auth Failures : 1
Current Users :
0. smith
XTND SHUTDOWN Performs an orderly shutdown of POP. Waits for current
client connections to disconnect. Recommended over the DCL
command STOP.
To simulate a POP client and obtain information:
1. Enter the TELNET command to the POP port (110).
2. Using the USER and PASS command, enter your user name and password.
3. Enter an XTND command.
For example:
$ TELNET UCXSYS 110
%TELNET-I-TRYING, Trying ... 16.20.208.53
%TELNET-I-SESSION, Session 01, host ucxsys, port 110
+OK POP server TCPIP Version 5.0, OpenVMS V7.1 Alpha at ucxsys.acme.com, up
since 1999-04-04 06:42:17 <[e-mail]>
USER username
+OK Password required for "username"
PASS password
+OK Username/password combination ok
Configuring and Managing the POP Server 18–13