Posfix making sense of delays in mail

The maillog is easy enough to follow, but when you understand what all the delay and delays numbers mean then this may help really understand what is going on!
A standard email entry in postfix looks like:

Jan 10 10:00:00 testmtr postfix/smtp[20123]: 34A1B160852B: to=, relay=mx1.example.lan[]:25, delay=0.49, delays=0.2/0/0.04/0.25, dsn=2.0.0, status=sent

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Install ruTorrent on xbian

Install and configure apache server:
sudo apt-get install apache2 apache2-utils libapache2-mod-php5
Configure Apache
Enable auth_digest module for ruTorrent authentication, SSL, and reqtimeout.

sudo a2enmod auth_digest ssl reqtimeout
Open apache2.conf

sudo nano /etc/apache2/apache2.conf
Edit or add the following lines:

Timeout 30
ServerSignature Off
ServerTokens Prod


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Installing Ffmpeg on xbian

For App to be able to create thumbnails and previews for video and audio files uses ffmpeg.
These instructions are specifically for version 8.0 (Jessie) of Debian/xbian.

Configure APT

Note: the commands in this section must be run as root

Add the following to the bottom of /etc/apt/sources.list:
deb http://www.deb-multimedia.org jessie main non-free
deb-src http://www.deb-multimedia.org jessie main non-free

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If you nead, automated certificate expiration checks on CentOS Linux

One important part of using SSL is to keep track of expiration dates on certificates. Most client software will rightfully refuse to connect to a server that presents an expired certificate, resulting in interrupted services. For CentOS and other RHEL based distributions, the crypto-utils package contains a very useful utility called certwatch, which can be used to detect whether a certificate will expire in the near future. (more…)

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Updated PowerShell script to loop through files for printing.

After finishing my script from the previous post I thought there has to be a better way to write this and reduce the lines of code. Not that 5 separate lines is a lot. But, if the list of items to print grew larger say to 15 documents, and was in different subdirectories then it might get complicated. So, I set about trying to find a way to use the ForEach-Object cmd. After some trial and error I have come up with this.

$Directory = “\\SVR1\DATA\Reports\Trading\”

Get-ChildItem -path $Directory -recurse -include *.pdf | ForEach-Object {Start-Process -FilePath $_.fullname -Verb Print -PassThru | %{sleep 10;$_} | kill }


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PowerShell comparison operators -eq, -lt, -gt, -contains, -like, -match

If you are used to operators such as > or < or =, you have to do some rethinking. As with batch scripts, PowerShell uses abbreviations of the corresponding English words. -eq Equal -ne Not equal -lt Less than -le Less than or equal -gt Greater than -ge Greater than or equal You don’t need an if statement to test the result of a comparison operation. Without the if statement, the output of the comparison is, simply, TRUE or FALSE. (more…)

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