Microsoft has release Rollup 6 for Exchange 2007 SP1 today. This rollup contains several fixes among which:
Maybe you have seen it mails from unknown domains will be relayed via the internal mailserver or mailserver that is placed in the DMZ. Normally when configuring the mailservers correctly it’s not possibly to send mail from a domain which is not hosted on the internal mailserver. But it can also be that a virus is active on a mailserver which is allowed to relay.</p>
In this tutorial I will explain how you can create a policy in Trend Micro IMSS to prevent this. The way of configuring is not really the way you think you have to do it, but the endresult will work.
First we will create a rule which matches incoming messages.
Select the button add and choose the option other.
Ensure that the this rule will apply to option is set to incoming , we wil change this later to both incoming and outgoing messages. We could not do this right now because the policy will not be created correctly then.
Next select on the link recipients a new window will be opened.
Select the option anyone and select save, the window will close. Next click on senders a new windows will be opened again.
Select the option anyone and select save, the last parameter we need to define in this step is the exceptions.
Add the following exception:
Repeat this for each domain.
When ready click on save to save the changes, you will get the following overview after this.
Click on the next button to continue. In this step we will define the conditions when a mail must be scanned by this policy.
In this case we want to scan all messages so we don't select anything en click on the next button.
You will get a warning that all messages will be scanned if not choosing any condition. Confirm this by clicking on the OK button.
The next step is the action that needs to be executed when a mail meets the conditions. In this case we will delete all messages which meet the conditions. You could choose to quarantine the messages, if you would like to do this change the action.
Next we will define the name and number of the policy. Keep in mind that the policy always needs to be created below the Global Antivirus Rule and Default Spam Rule. You may choose to not activate the policy right now but activate it after the steps below.
When you return to the policy overview you can see that the policy is added.
Now we have added the policy we need to change it. This because it's not possible to add *@* as sender/recipient in this policy when choosing the option to apply this policy on both incoming and outgoing messages.
Click on the policy to view the details
Click on if recipient and senders are
Change the option this rule will apply to to both incoming and outgoing messages. Next we will change the exceptions. This can be done by clicking the link Senders and Recipients after the option exceptions.
Add the following exception:
Add the exception for each domain, when ready click save 4 times to return to the policy overview. If you have not activated the policy activate it.
In the transport rules from Exchange 2007 you can use regular expressions. This can let you block specific words. But what happens in some cases is that correct words are also blocked because they contain the blocked specified character pattern. You can prevent this by using one or more of the parameters below:
The guys from the Exchange team have posted a nice article. It’s about virtualizing you Exchange 2007 environment. In this article several scenario’s will be explained in which it can be quite interesting to virtualize Exchange.
With export-mailbox it’s possible to export a mailbox to, for example, a pst file. When using the parameter -DeleteContent normally the contact will be deleted after exporting the mail. In some cases this does not happen. It looks like to happen if a mailbox contains more then 4000 items
MFCMapi makes it possible to edit the mailbox directly via the Messaging API (MAPI). This can be very usefull to remove a setting which is still on an object but is not visible anymore in the GUI. For example an user which is a delegate but does not exist in AD but you still receive error when trying to arrange a meeting with the mailbox. This can cause a lot of e-mails about non existing users. With MFCMapi you can remove the entry and solve the issue you have.
Standby Continuous Replication is a part of Exchange since service pack 1. With this option a copy from the storage group is made to another server for example a server in a DR site. This is done by copying the log files from the production server to the server in the DR site.
Maybe you have seen it an e-mail with a winmail.dat file as attachment. This is caused by a sender which sends an e-mail in RTF format to a user that has an e-mail client which does not support RTF.
As you may know some things have changed in Exchange 2007 for Out Of Office settings, it’s now possible to define seperate Out Of Office messages for internet senders and internal senders.</p>
Besides these changes there are no Out Of Office messages send to senders who are listed on the blocked sender list or if the mail is placed in the junk mail folder.
When you are a member of several mailing lists it can be quite irritating if an Out Of Office message is send to it. In Exchange 2007 there are no Out Of Office messages send to it anymore.
With the Exchange Management Shell it's possible to modify several settings:
The settings above can be configured per user. This is done by using the parameter -ExternalOOFOptions in combination with set-mailbox.