system administrator spam

"Undeliverable" Messages From "System Administrator" - Just Spam?

Hello,

I've been receiving lots of message for the past several days in my Outlook
2003/Exchange mailbox, ostensibly from "System Administrator," with a return
postmark icon instead of the usual envelope icon, and with a subject
beginning with "Undeliverable." Since Outlook considers this a "Report" and
not a "Message," I cannot check the headers to see if this is legitimately
from Exchange.

Also, I've been receiving many other returned e-mails from outside my network.

Please note that in both cases the subjects would imply that the original
e-mail was spam and not something I'd intended to send out.

What I'd like to determine is (1) are these messages/reports from my System
Administrator legitimate or are they spoofed?, and (2) is some worm or
malware sending out spam from within my SBS 2003 network, or is some spammer
out there using an address from my domain as their "From"?

Hopefully these questions are not out of the scope of this newsgroup.
Thanks in advance for any suggestions!
--
Jim Angiello
Steadfast Builders, Inc.

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poll system call

The select() and poll() methods can be a powerful tool when you’re multiplexing network sockets. Specifically, these methods will indicate when a procedure will be safe to execute on an open file descriptor without any delays. For instance, a programmer can use these calls to know when there is data to be read on a socket. By delegating responsibility to select() and poll(), you don’t have to constantly check whether there is data to be read. Instead, select() and poll() can be placed in the background by the operating system and woken up when the event is satisfied or a specified timeout has elapsed. This process can significantly increase execution efficiency of a program. (If you are more concerned with performance than portability, we discuss some alternatives to select() and poll()toward the end of the article.)

As you will see, select() and poll() are very similar in functionality. Often, implementations of select() and poll() are mapped onto each other. For instance, in theApache Portable Runtime, a core component of Apache 2.0, a portable interface is provided that mimics the poll() semantics. On platforms that do not have a native poll()implementation, the poll() semantics are mapped onto select(). On FreeBSD, the libc_r implementation of select() is merely a thin wrapper around the poll() system call.

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jah shaka sound system

Jah Shaka has been operating a London-based, roots reggae Jamaican sound system since the early 1970s. His name is an amalgamation of the Rasta term for God and that of a Zuluwarrior, Shaka Zulu.

He started out on the Freddie Cloudburst Sound System, before setting up his own sound system. Jah Shaka events are renowned for attracting a wide audience from all backgrounds and races. Shaka believes it to be a testament to the quality of the message that he expounds in his choice of music and his Rastafarian beliefs.

Shaka stayed true to his Rastafarian beliefs during the 1980s when many other Sound Systemshad started to follow the Jamaican trend towards playing "slack" dancehall music. His refusal to compromise inspired a host of new UK reggae artists and Sound Systems such as Eastern Sher, The Disciples, Iration Steppas, Jah Warrior, Channel One Sound System, Conscious Sounds, The Rootsman and Abashanti-I. Non-reggae artists such as Basement Jaxx have also cited Jah Shaka as an influence during interviews.

On his own record label he has released music from Jamaican artists such as Max Romeo,Johnny Clarke, Bim Sherman and Prince Alla as well as UK groups such as Aswad and Dread & Fred. He has released a number of dub albums, often under the Commandments of Dub banner.

In 1980 Shaka played himself in the film Babylon (directed by Franco Rosso), operating his Sound System in a soundclash at the climax of the story. In 1989 Shaka visited Jamaica and worked with many musicians there, including King Tubby. In 2000 he suffered numerous injuries during a house fire.

The Jah Shaka Sound System continues to appear regularly in London, with occasional tours of the United States, Europe and Japan. Live footage of Shaka featured in the documentary All Tomorrow's Parties based on the musical festival, which was released in 2009.

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mail archiving system

If you're an IT manager, email admin, storage administrator or in-house attorney, you're probably grappling with how to manage email and file stores that are growing exponentially. New discovery and privacy requirements are forcing you to both know what you have and retrieve it quickly. Building a consensus on what you should do and actually doing it can be difficult.

At this seminar with independent experts Mark Diamond and Greg Forest of Contoural (or Mark Davies and Matt Jeavons in London), find out how an email and file archiving strategy can help you deal with the issues resulting from the explosive data growth and new discovery and data management requirements. Learn how you can reduce storage, quickly respond to litigation and compliance problems, increase IT productivity and reduce backup and restore times. You will hear case studies that relate what can happen if you ignore email archiving best practices, as well as see the cost savings and e-discovery benefits of proper file archiving.

Join us for this FREE seminar to find out what you need to know before designing and deploying an email and file archiving strategy!

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system.workflow.activities

How to Write a Custom Workflow Activity

Published on January 25, 2007

Normally writing a custom workflow is a common task in Windows Workflow Foundation because there are many situations that we need to apply a development process to workflows. There are several references about writing a custom workflow but I see many newbies who can't understand the process easily. In my opinion the reason is most resources try to talk about all aspects of writing a custom activity at a glance without simple examples. So I want to test my chance and write about this topic in this post and some future posts. I'll begin with a simple custom activity which doesn't have any optional or advanced part of a custom activity.

There are two general types of custom activities: basic and composite. Both basic and composite activities can work with properties, events and ... but composite activities can do something more. Composite activities can contain basic or composite activities. There are some examples of basic and composite activities in built-in workflow activities. Delay or Suspend are two examples of basic activities and While or Parallel are two examples of composite activities.

It's possible to write a custom basic activity or composite activity but process to write a composite activity is a bit longer than basic activity.

Each activity is constructed of some components but for an activity it's not essential to have all these components:

• Definition: Main definition for an activity where you define properties, events and ...
• Executer: This component defines the execution logic for an activity. For example you can use this component to run child activities in a special order.
• Validator: Validator components helps you to validate workflow information before runtime so it can let you to prevent from some exceptions as a result of wrong input.
• Toolbox Item: This component defines default values to be added to a workflow when it's being added to workflow. For example you can use this component to set a default integer value for a property.
• Designer: Designer component is all about visual presentation of a workflow and what you see when you're working with it.

Only first component (Definition) is required for an activity to work but usually other components are implemented for an activity. As you can guess from above description it's not always necessary to have an execution logic, validation logic, default values or a good visual presentation so you can ignore these components based on your needs.

In this post I just want to introduce the core by giving a simple example that only needs first and second components (Definition and Executer). I write a custom workflow activity that gets two string values: a file path a text. On execution it creates a text file and writes text value into it. Before doing anything I create a Class Library project and add appropriate references to it then create a new class file and name it CustomActivity

Alright, I begin with definition component. To design a custom activity I have to derive my definition from a base class. For basic activities I must inherit it from System.Workflow.ComponentModel.Activity and for composite activities I must inherit from System.Workflow.ComponentModel.CompositeActivity base classes. As I want to design a base activity, derive my class from

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raid system recovery

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