Debian

Exim4-LDAP is my latest development progress. It is a Debian package that depends on exim4-heavy-daemon and slapd, which utilize Qmail-LDAP schema as backend database schema for seamless migration. Unlink Qmail-LDAP which required for manual source patching and compile, Exim4-LDAP just define additional authentication/router/transfer rules within configuration files. The ultimate goal of this research project is going to integrate with Samba-LDAP-PAM (for both Windows/Linux Single-Sign-On), RADIUS (for other services SSO) and even other services such as webmail. The project is now hosting in SourceForge.net with .deb available, download now. Here I will draft some simple installation guideline which not yet included in source package document. I am now testing this with a newly installed Debian Lenny sandbox.
I am going to share some user account & directory with NFS among 2~3 servers. Traditionally we can use NFS+NIS solution, but I would like to try out NFS+LDAP+PAM/NSS plus OpenLDAP mirror mode replication.
For LDAP + PAM/NSS, please refer to my other article: LDAP + Samba PDC + PAM/NSS on Debian Lenny HOWTO

Add OpenLDAP mirror mode replication to existing server

I just figure out that 3ware had a new release of firmware and tools for my 9650SE RAID controller. BTW, as Debian unofficial APT is now legacy without update, I search for package original author webiste: http://jonas.genannt.name/ P.S. According to release note, need to upgrade driver and software BEFORE (prior) upgrade the firmware:

Background: I run multiple VirtualBox client within a single server. Each VirtualBox client coming with its *.vdi file for sure. Accidentally I run rm to them during migration and backup, and so some *.vdi are lose. I need to rescue them. Most important action for rescue: unplug the server power and shut-it-down IMMEDIATELY! Try not to preform ANY write action to the target harddisk ANYMORE!

Besides mod_evasive, there exists another spam deference module for Apache2 in Debian unstable - libapach2-mod-spamhaus.

Again mod-spamhaus is a configuration-free package. Just install it with apt-get:

apt-get -t unstable install libapache2-mod-spamhaus

Double check the installation with:

find /etc/apache2 -name '*spamhaus*'

Also remember to restart Apache in order to get it active:

Recall to my previous Exim4 + Courier + SSL on Debian etch mini-HOWTO, Exim4 authentication should work fine without enable plain_courier_authdaemon and login_courier_authdaemon support. But case will become a bit more complicated when using LDAP-Samba-PAM/NSS setup: LDAP user will now not able to be authenticated. Why and what's up!?

Similar as my previous approach with GMail SMTP smarthost relay, now I try to use my own ISP's SMTP as relay server. BTW, as HGC Broadband's SMTP server only allow port 25 with plain text authentication, with default Debian setup I get the following error message:

NOTE: For complete and latest version please refer to http://wiki.debian.org/GmailAndExim4

Background

My email server seems a bit crazy on these day: both GMail and Yahoo! Mail block a direct send from my server because of following reason: hswong3i@gmail.com SMTP error from remote mail server after end of data: host gmail-smtp-in.l.google.com [209.85.143.114]: 550-5.7.1 [x.x.x.x] The IP you're using to send mail is not authorized to 550-5.7.1 send email directly to our servers. Please use the SMTP relay at your
All default setup for new Mailman list are located in /usr/lib/mailman/Mailman/Defaults.py, BUT please NEVER touch it and override by using /etc/mailman/mm_cfg.py. Here are some suggested setup for internal usage, just copy and append at the end of /etc/mailman/mm_cfg.py: DEFAULT_ARCHIVE_PRIVATE = 1 DEFAULT_GENERIC_NONMEMBER_ACTION = 3 DEFAULT_LIST_ADVERTISED = No DEFAULT_MAX_MESSAGE_SIZE = 0 DEFAULT_MSG_FOOTER = "" DEFAULT_MSG_HEADER = "" DEFAULT_REQUIRE_EXPLICIT_DESTINATION = No DEFAULT_SUBJECT_PREFIX = ""

SNMP is used in network management systems to monitor network-attached devices for conditions that warrant administrative attention. With SNMP + RRDTool + Cacti, you can generate graph for your system dynamically. As compare with other solution, e.g. SNMP + MTRG, RRDTool is more specific for information NOT only about network traffic but support both other information, plus database-like query system so you can fetch report for any time period. This mini-HOWTO will guide you though the setup for SNMP + RRDTool + Cacti on Debian Lenny.

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