User manual KASPERSKY LAB KASPERSKY ANTI-VIRUS-SMTP-GATEWAY 5.0 FOR LINUX & UNIX ADMINISTRATOR GUIDE

[. . . ] KASPERSKY LAB Kaspersky® SMTP-Gateway 5. 0 for Linux/Unix ADMINISTRATOR'S GUIDE KASPERSKY® SMTP-GATEWAY 5. 0 FOR LINUX/UNIX Administrator's Guide © Kaspersky Lab Ltd. http://www. kaspersky. com Revision date: August 2004 Contents CHAPTER 1. KASPERSKY® SMTP-GATEWAY 5. 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Licensing policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] For example: Linux, Webmin, no access to settings of the licensed users' list. 2. Avoid sending messages in HTML format as it is hard to read. At the beginning of the message specify the exact version of your operating system and Kaspersky SMTP-Gateway installation package, and provide the name of your license key file. Describe your problem briefly but comprehensibly. Please keep in mind that the Support team has no information about your problem when your letter just arrives, and they will be able to help you only if they understand it completely and manage to reproduce it. Please compress the following data into one archive, and send it to the Technical Support Service: · · · · 6. all configuration files of your mail agent (MTA); mail system log file; logs of the respective components of your application; your license key file. Make sure that if any of the following is present in your system it is mentioned in your message: SCSI controller; a very old or a brand new CPU, or a multiprocessor configuration; RAM below 64 Mb or above 2 Gb. Indicate the approximate amount of daily traffic and load peaks, if they exist. 4. 5. Question: Can a hacker deliberately replace the anti-virus databases?A hacker may be able to download the anti-virus databases from the Kaspersky Lab's site and copy them to the anti-virus database storage directory, but the Kaspersky SMTP-Gateway will not use them in its operation!Every anti-virus database has a unique signature verified by Kaspersky SMTP-Gateway while accessing the database. If the signature does not 64 Kaspersky® SMTP-Gateway 5. 0 correspond to the one assigned at the Kaspersky Lab, or the date of the database is later than that of the license expiry, Kaspersky SMTPGateway will not use it. Question: The application cannot be started, the Sender task does not work, etc. If, due to incorrect settings, the number of running processes (threads) exceeds the maximum number permitted by the system, the application performance may be affected or your system will freeze. To solve this problem, decrease the number of concurrently active incoming and outgoing mail sessions and the number of objects scanned simultaneously by the anti-virus module (AntiviralSessions, IncomingSessions, and OutgoingSessions parameters in the [smtpgw. limits] section of the application configuration file). This problem can be also solved by limiting the stack size. To limit the size, enter the following string in the command line: >ulimit ­s The maximum stack size will be displayed on the console. Set the new value equal to the quarter of the current value by doing the following: >ulimit ­s <number> where <number> is a new maximum stack size. Question: What should I do to make man pages of the application available by the command man <name>?To make application man pages available using man <name> command after each restart of your system, do the following: o For Debian Linux, SuSE Linux distributions, the following line should be added to /etc/manpath. config file: MANDATORY_MANPATH /opt/kav/5. 0/smtpgw/man o For RedHat Linux distributions, the following line should be added to /etc/man. config file: MANPATH /opt/kav/5. 0/smtpgw/man o For OpenBSD distributions the following line in /etc/man. conf file: _default /usr/{share, X11R6, X11, contrib, gnu, \ local}/{man, man/old}/ Frequently asked questions 65 should be modified like: _default /usr/{share, X11R6, X11, contrib, gnu, \ local}/{man, man/old, share/kav/5. 0/smtpgw/man}/ o For FreeBSD distributions the following line should be added to /etc/manpath. config file: MANDATORY_MANPATH \ /usr/local/share/kav/5. 0/smtpgw/man CHAPTER 8. TESTING APPLICATION OPERABILITY After you install and configure Kaspersky SMTP-Gateway, it is recommended that you test its operability by using the following two methods: · · Telnet program, EICAR test virus 8. 1. Testing the application using Telnet To test the application operation using Telnet it is necessary to: 1. [. . . ] You may terminate this Agreement at any point by destroying all copies of the Software and the Documentation. (i) Kaspersky Lab will provide you with the support services ("Support Services") as defined below for a period of one year following: (a) Payment of its then current support charge, and: (b) Successful completion of the Support Services Subscription Form as provided to you with this Agreement or as available on the Kaspersky Lab website, which will require you to produce the Key Identification File which will have been provided to you by Kaspersky Lab with this Agreement. It shall be at the absolute discretion of Kaspersky Lab whether or not you have satisfied this condition for the provision of Support Services. (ii) Support Services will terminate unless renewed annually by payment of the then-current annual support charge and by successful completion of the Support Services Subscription Form again. [. . . ]