Stopping Former Users Email on Exchange

If you have removed the users mailbox, it should be rejected automatically.

Don

Open up the user's mailbox in Exchange. Click on the "Delivery Restrictions" tab. Change the "Accept messages from" to "List", and leave it blank. The mailbox will no longer accept messages from your Global Address List. Then go to the "E-mail addresses" tab, and remove the SMTP email address. The mailbox will then no longer be able to receive outside e-mail.

It will not be rejected simply because the mailbox has been deleted. I found info on this same question by searching Q&A a few months ago and found that you can't stop email that is sent to an email address that could be valid on your mail server.Say, for example, that your email address is whoever@whatever.com. Your mail server will accept mail coming to anything@whatever.com. You can have any mail that is sent to a non-existent address redirected to an adminstrator's mailbox by using Exchange Administrator. Under Connections highlight Internet Mail Service then click on File, Properties. On the Internet Mail tab, click on the Notifications button and choose to have notifications sent for email addresses that could not be found. Second, you can use a dummy mailbox to receive mail for old employees by adding their address as an alias for that dummy mailbox in Ex Admin. Double click on the dummy mailbox in Mailbox Resources and on the Email Addresses tab add a new smtp addressusing the address of the former employee. You can then monitor the dummy mailbox and empty it every now and then. You will be surprised at the junk you get when you start receiving mail that was sent either to the wrong address, like the name was typed wrong, or to a non-exsistent address. Some people get so much email sent to the wrong address (with a typo in their name like 1smith instead of lsmith) that I have added an alias to their account so they will get the email even if it was sent to the wrong address. You can also use the alias thing when an employee changes their name.

I know of no way to set up any filters to prevent inbound email to a single mailbox.

Routers/firewalls usually filter traffic based on destination address, originating address, type of traffic, domain name, etc. For incoming email the only destination address the traffic REALLY has is your email server (based on type of traffic).

It is the email server that determines whether the mail is addressed to a valid mailbox and reacts accordingly (either delivering mail or sending a bounce message).

Why not create a mailbox called Junk. And forward all old unwanted emails to that.. Then set a rule up to deleted all emails on that once a week for example. Well just a suggestion.

Good Luck!

Here's 2 options:
Create a mailbox called {Junk, Termed, etc.}. Add SMTP aliases for your termed employees. Set the storage limits on the mailbox to block send/receive at 1 MB. Then the message won't be accepted.
or
Create a script to clean out your Badmail folder once a week, and forget about it.

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