FW: E-mail:- large files

From: Sayed, Zubair
Sent: 24 July 2007 10:53 AM
To: '******'
Subject: RE: E-mail:- large files

The fact that you created an empty mailbox does not mean a user can send large files/attachments. This is not controlled from the client.

Follow these steps to check if there are any limits imposed on the user account first, if your environment is configured to use Mailbox store defaults than you need to check with the Exchange admins what the organizational limit is set at.

To check if limits are placed in the user account follow these steps: This depends if the problem is experienced with just one user or all.

Either on the Exchange server or DC or any other server or workstation with the Exchange Server tools installed:

1. Find the user account or any user account in AD

2. Double click or open properties of user account

3. If the Exchange tools are installed you should see a tab called - Exchange General

4. Then click on Storage limits

5. If the use Mailbox Store Defaults are select this means the limit is set from the Exchange Server, now you can manually change this but I don’t think you want to do this. (see image)

6.

To check the limits on the Exchange server you need to:

1. Open Exchange System Manager

2. Find your mailbox stores or any store, right click on the store, select properties and click on the Limits tab.

3. WARNING: Be sure not to click the Dismount Store option, then you in deep trouble. L

If there are limits set I recommend you get permission before changing or granting a user larger file sending/receiving limits, as this can pose serious security risks for the entire organization.

Hope this helps….

Regards

Zubair

From: [mailto:******@*********.***]
Sent: 24 July 2007 10:37 AM
To: Sayed, Zubair
Subject: E-mail:- large files

Thanks I sorted it out by deleteing the nk2 files.

I have another issue with sending large e-mails E.g. 15 megbytes

I have created a new account with nothing in the mailbox and cannot send this file.

Please assist me here.

Thanks

Exchange/Global Address List Issue & IE 6 Issue

There are 2 ways that you can achieve this, the easy way and the tedious way, I suggest you try the easy way first and then take it from there.

Global Address List Fix:

As far as I understood you yesterday you had a user account created in AD with an Exchange Mailbox linked to it, example: someone@whatever.com and the account was deleted, and now it has been recreated for whatever reason and when a user sends an email to this email address he receives an undeliverable message?

What I need to know is does this happen to all users or just one user????

If this occurs only when one user is sending mail to this address on the GAL (Global Address List) I suggest you first Download the Full address book in Outlook, this is a major problem with Exchange environments when a user is using Cached Exchange Mode and changes are made to the GAL…. Try these 2 steps first before doing anything on the Exchange server!!!

To do this is in Outlook 2003/2007: (other versions might have slightly different ways to do this)

Step 1. Click on Tools >>> Send & Receive >>> Download Address Book >>> Download Full Details – this will ensure the user gets the latest address book.

Step 2. For this step ensure Outlook is closed, search on the client pc for a file called outlook.nk2 or any file with a .nk2 extension, delete all files with .nk2 extension and re-open Outlook and try sending an email to this user again…. This should resolve your issue

If this issue affects all users in the environment you can try these Exchange fixes….

1. Run the Recipient Update Service (RUS)

2. If you have deleted the user from AD and they still show in the global address list, you must run "mailbox cleanup" on your Exchange server. After that you can "Purge" the mailbox, this will delete the users emails and remove the user from the global address list.

IE Fix: The fix I have is for IE6, not sure about IE7, I need to know when the error occurs etc, like when a certain website is accessed maybe when accessing a particular Active X Control or Flash enabled site…..

Try this:

Repair Internet Explorer 6

A number of XP users have reported situations with Internet Explorer 6 becoming corrupted and reporting a number of different errors. While there is certainly no guarantee, the two procedures listed below have restored functionality to IE6 for many users experiencing problems.

Note: Both methods listed require that the Microsoft Windows XP CD-ROM be available.

Method 1: Microsoft Internet Explorer 6.x Repair for Windows XP

· From the Start menu, select Run.

· In the Open field, type sfc /scannow (Note: There is a space between sfc and /scannow)

· Select the OK button.

· Follow the prompts throughout the System File Checker process.

· Reboot the computer when System File Checker completes.

Method 2: Microsoft Internet Explorer 6.x Repair for Windows XP

· From the Start menu, select Search, select All Files and Folders.

· Select More Advanced Options and place a checkmark beside Search Hidden Files and Folders option.

· Ensure that Search System Folders and Search Subfolders are also checked.

· In the All or Part of the File Name box, type ie.inf

· In the Look In drop-down menu, select C: or the letter of the hard drive that contains the Windows folder.

· Click the Search button.

· In the search results pane, find the ie.inf file located in Windows\Inf folder.

· Right click the ie.inf file and click Install on the context menu.

· Reboot the computer when the file copy process is complete.

Good Luck!

PS: if the Outlook/Exchange fix does not work than there are other ways to resolve this, but it will mean we will have to drill deeper in Exchange….

Kind regards

Zubair Sayed

Siemens IT Solutions and Services (Pty) Ltd

Systems Engineer

Shared Services

Siemens Southern Africa

www.siemens.co.za / www.siemens.com

Please send me the fix for ie 6 and the settings to purge global address book.

Thanks

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E-mail	E-mail is the transport mechanism of choice for many malware attacks.	• Spam filters • Real-time antivirus and antispyware scanners • User education
Phishing	Phishing attacks try to trick people into revealing personal details such as credit card numbers or other financial or personal information. Although these attacks are rarely used to deliver malware, they are a major security concern because of the information that may be disclosed.	• Spam filters • Pop-up blockers • Antiphishing filters • User education
Removable media	This threat includes floppy disks, CD-ROM or DVD-ROM discs, Zip drives, USB drives, and memory (media) cards, such as those used in digital cameras and mobile devices.	• Real-time antivirus and antispyware scanners • User education
Internet downloads	Malware can be downloaded directly from Internet Web sites such as social networking sites.	• Browser security • Real-time antivirus and antispyware scanners • User education
Instant messaging	Most instant messaging programs let users share files with members of their contact list, which provides a means for malware to spread. In addition, a number of malware attacks have targeted these programs directly.	• Real-time antivirus and antispyware scanners • Personal firewall • Restrict unauthorized programs • User education
Peer-to-peer (P2P) networks	To start file sharing, the user first installs a client component of the P2P program through an approved network port, such as port 80. Numerous P2P programs are readily available on the Internet.	• Real-time antivirus and antispyware scanners • Restrict unauthorized programs • User education
File shares	A computer that is configured to allow files to be shared through a network share provides another transport mechanism for malicious code.	• Real-time antivirus and antispyware scanners • Personal firewall • User education
Rogue Web sites	Malicious Web site developers can use the features of a Web site to attempt to distribute malware or inappropriate material.	• Browser security • Pop-up blockers • Antiphishing filters • User education
Remote exploit	Malware might attempt to exploit a particular vulnerability in a service or application to replicate itself. Internet worms often use this technique.	• Security updates • Personal firewall
Network scanning	Malware writers use this mechanism to scan networks for vulnerable computers that have open ports or to randomly attack IP addresses.	• Software updates • Personal firewall
Dictionary attack	Malware writers use this method of guessing a user's password by trying every word in the dictionary until they are successful.	• Strong password policy • User education

 

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