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1.1General
Q1.1-1. What is NOPAM?
Q1.1-2. What's the license of Nopam?
Q1.1-3. What are the hardware and software requirements of Nopam?
Q1.1-4. Where is the SCU (Spam Checking User Interface) installed in NOPAM 1.0 package?
Q1.1-5. How to manage the intercepted spam through SCU?
Q1.1-6. How to turn on Nopam's advanced debug messages?
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1.2 Management
Q1.2-1. Please give a basic introduction of the Nopam directory layout after installation.
Q1.2-2. How to start or stop Nopam?
Q1.2-3. What should I do if there is an error message "Init_ID_socket: bind fail port" during Nopam startup?
Q1.2-4. How do I know that Nopam is running normally?
Q1.2-5. How to trace mails processed by Nopam through /var/log/maillog?
Q1.2-6. How to locate the emails I want from the backed-up emails?
Q1.2-7. I have activated the Nopam backup function, how to locate the backup and send it back to the recipient?
Q1.2-8. How to cancel or start the mail backup function?
Q1.2-9. By what ways can we deal with mails recognized as spam or with virus?
Q1.2-10. How to modify the subject of spam and virus mails?
Q1.2-11. What is the default subject prefix that Noapm adds to spam and virus mails?
Q1.2-12. Can I activate Nopam without doing any filtering on mails?
Q1.2-13. Nopam opens a lot of connections to pass mails to my mail server, but my mail server can not deal with such a large number of connections. What should I do?
Q1.2-14. I¡¦ve modified Nopam config files, how to make those new settings work?
Q1.2-15. If I restart or stop Nopam when it is processing mails, would it cause mail loss?
Q1.2-16. What is SPDB? Why should we need to update SPDB?
Q1.2-17. How to update SPDB? 
Q1.2-18. Can I manually update SPDB?
Q1.2-19. If the downloaded SPDB is damaged due to network or hard disk problems, will this lead to any trouble?
Q1.2-20. Could Nopam lists the log messages on console synchronously?
Q1.2-21. Can I add sender whitelist to my own email server? 
Q1.2-22. I receive the following error message when I start Nopam:  
¡@ ¡@>bw_open_log_file: unable to open [../logs/YYYYMMDD.bwd]
¡@Warning: Unable to open log file, disable logging service.  
After that, Nopam fails to start.
Q1.2-23. If I have troubles not mentioned in the manuals and FAQ, and the trouble related to the email setting on Nopam, what should I do if I would like to report the trouble or get some help?
Q1.2-24. I found there were some misjudged emails, how should I report this?
Q1.2-25. In ASP installation mode, how to avoid unfiltered mails which spammers deliver to user mailbox directly without going through Nopam pointed by DNS MX? 
Q1.2-26. We provide a server for STMP relay service to internal users. The server coexists with Nopam on the same host. The relayed mail will be fed into Nopam before its outgoing to external world. Some of the mails are marked as SPAM. How to solve this?
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1.3 Mail Queue
Q1.3-1. What is the Nopam mail queue? 
Q1.3-2. How are the mail queues working in NOPAM? 
Q1.3-3. How to browse the emails in mail queues?
Q1.3-4. How to force Nopam to do immediate delivery of the emails in mail queues? 
Q1.3-5. How to delete the emails in mail queue?
Q1.3-6. I found there is a lot of emails in "data/lsd_async" (SPOOL IN), and I think these unprocessed emails need not to go on spam-detection by Nopam. Is it possible to deliver them all as HAM mails?
Q1.3-7. Can I use the 'rm' command to delete the emails in mail queue?
Q1.3-8. How to set up the retry times for email delivery of Nopam?
Q1.3-9. Where will the email go when the maximum retry time is exceeded? 
Q1.3-10. How long does it take for Nopam to deliver the email again if there was a delivery failure due to some reason?
Q1.3-11. Should I pay attention to those emails in the mail queue?
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1.4 Advanced Management and Setting
Q1.4-1. Is it possible to limit Nopam to receive only emails from some certain IP addresses of MTA server? 
Q1.4-2. Can I use Nopam as SMTP server for mail relay?
Q1.4-3. How to integrate Nopam with anti-virus software?
Q1.4-4. How to limit the incoming mail arrival rate to Nopam?
Q1.4-5. How to limit the outgoing mail departure rate of Nopam?
Q1.4-6. Can NOPAM be organized for load balancing?
Q1.4-7. Can NOPAM support multiple MTA servers?
Q1.4-8. Can NOPAM check emails but leave mail header unchanged?
Q1.4-9. I configure to backup all emails and block the spams, but result in lack of spams on the backup list. May I ask how to backup spams by the way?
Q1.4-.10 I used FreeBSD 5.x as server OS, and Sendmail is used for MTA server. What should I do if there are I/O error messages in the Sendmail log?
Q1.4-11. I've used Dcc for my system, ever since I installed NOPAM, I've got the following messages every now and then, what do they mean?

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no answer from dcc2.dcc-servers.net (198.137.254.147,6277) after 14023 ms

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continue not asking DCC 16 seconds after failure

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continue not asking DCC 16 seconds after failure
Q1.4-12. How should I do if there is always a heavy email load on our email server? It happens that Clamd consume much CPU time (e.g. high load cased by ClamAV lasts for a few minutes).
Q1.4-13. There were a lot of emails from some certain MTA server been detected as spam. But I am quite sure that they are from legitimate server, and most of them should be HAM. What's the problem?
Q1.4-14. I employ the Loop Around model. If the incoming MTA host (running Sendmail) is installed on the same machine with Nopam, what should I do if "nopamctl" generates the error message: "Error:Switch to the user specified duing installation before starting NOPAM".
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1.5  Others
Q1.5-1. Will Nopam run on other OS besides FreeBSD?
Q1.5-2. If I have an installation or usage problem, whom should I ask for help?
Q1.5-3. I have found a bug, where should I report it?
Q1.5-4. Does NOPAM offer any “professional service”?
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1.6¡@New Functions After Nopam v1.2
Q1.6-1. What is Web Management Console on Nopam?
Q1.6-2. Is it able to limit the IP range allowed to connect to Web Management Console?
Q1.6-3. Can I tell how many emails could Nopam process per day including tha ratio of HAM and SPAM?
Q1.6-4. What is the Site Report? Can I turn this service off?
Q1.6-5. Can Nopam update the ClamAV virus database for me?
Q1.6-6. How much time will Nopam spend in processing each email? Will processing time be altered?
Q1.6-7. Besides using "qsq_cleaner", If there any alternative solution to flush Nopam mail queue?
Q1.6-8. I have adapted Loop-Around mode for Nopam installation. In this case, will Nopam return the undelivered mail back to sender?