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Postfix monitoring with Cacti, my way – part 1

By Lux, on August 17th, 2015 Linux, Postfix

In the next few posts I’ll show how I collect data from Postfix, publish them into net-snmp, and graph them with Cacti.

I am interested in data about Postfix queues sizes possibly on multi-instance configurations, and about Postfix events.
I decided to use SNMP instead of launching scripts directly by Cacti for a number
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DRAC 4/P reset password on CentOS7

By Lux, on July 13th, 2015 Generic, Linux

2017 01 30 update: OpenManage packages updated from v8.1 to v8.4. Removed missing dependency warning.

I have a couple of old Dell R200 with CentOS7. I wanted to add two DRAC 4/P remote management cards I buought on ebay (attention: you must also have the mixed PCI-X-PCI-E riser for this, I used SN N4489; and
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Postfix: mail loops back to myself

By Lux, on February 4th, 2015 Linux, Postfix

A quite common problem in postfix is when you find lines like this in your logs:
status=bounced (mail for domain.com loops back to myself)
Most of the time the problem is self-explanatory: domain.com’ MX record says mail should be delivered to the box itself, but postfix is not configured to be the destination
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Frank: new packages from Fedora 18

By Lux, on February 7th, 2013 Linux

Since the recent release of Fedora 18, almost all Frank packages underwent an update.
I kindly invite Frank users to visit the Frank page and the repository to see what’s new.

The Frank page
The repository

New Horde packages

By Lux, on November 24th, 2012 Linux
horde

Horde-5, Imp-6 and the other usual components are available for CentOS6.

The repository

Yum error connecting IPv6 address

By Lux, on August 13th, 2012 Linux

A simple yum update command fails. The scary thing is the error message which tells it’s impossible to connect to an IPv6 address:

# yum update
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
14: PYCURL ERROR 7 – “Failed to connect to 2a02:2498:1:3d:5054:ff:fed3:e91a: Network is unreachable”
Error: Cannot find
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New Horde packages

By Lux, on June 28th, 2012 Linux
horde

Horde-4, Imp-5 and the other usual components are available for CentOS6.
The packages were originally derived from OpenSuSE some time ago, using some scripts to convert them to my preferred environment. After that conversion, they are updated independently and do not depend from OpenSuSE anymore.

The repository

New Postfix Admin package

By Lux, on June 23rd, 2012 Linux, Postfix
Postfix Admin

This is my latest Postfix Admin package, version 2.3.5. Personally I prefer the shell, but an interface like this is much more relaxing for provider operators (and for the admin too!).
This package includes three patches that implement some functionality that seem to be indispensable for some providers, to the point of changing a
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Frank: new kernel & other packages

By Lux, on March 7th, 2012 Kernel, Linux

Updated Frank packages have been published. Among them, the kernel derived from latest Fedora 16 update. This kernel, together wih the other Frank packages, satisfies completely the shorewall requirements (see shorewall show capabilities after installing xtables-addons and xtables-addons-kmod). Other packages include Openswan-2.6.37.

The Frank page
The repository

New linux-atm packages

By Lux, on February 29th, 2012 Linux

New linux-atm packages were published in Lux. These are derived from Fedora, updated to version 2.5.2.
Among other things, these packages attempt an integration of the atm interfaces atm with the bootstrap system of RHEL6/CentOS6.
Altough this component may seem marginal, it is essential to give the system Casa its peculiar advantages.

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