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Masquerade Domain Problem

Posted on 2004-08-06
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Last Modified: 2008-03-08
Now correct me if I am wrong but I am under the assumption that the Masquerade domain feature allows you to change the domain appearing in the from address?

I have an Exchange 2003 Enterprise server which is sending out mails with a return address of user@domain.com I want them to have a return address of user@some.other.domain.com, I have read the KB article and that just tells me how to set it up, I did that but nothing changed I need to know how to troubleshoot this

Thanks

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Question by:nemesis1210
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by:Sembee
ID: 11735175
You need to put the other domain in recipient polices then adjust the email address on the users. If you want it to be the same for all users then you will change the default address in recipient policy.

Simon.
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by:nemesis1210
ID: 11735552
That results in if I send mail to someone at user@some.other.domain.com and they have a mailbox with that as the default address, then the mail will be delivered locally, I want to send it externally, which is why I was looking at the Masuerade domain
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by:Sembee
ID: 11740683
It isn't really clear what you are trying to achieve here.

If your system is domain.com and you want to send the message to someone at exchange.com then why not just enter the email address and send? If you want the email to appear to come from another address then you are effectively spoofing the sending address - a practise that is frowned upon by the Internet community as it is a spam trick.
For example on two sites I look after, any email claiming to come from the internal domain is dropped at the gateway as it will be a spoofed email message that hasn't originated from within.

Simon.
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by:nemesis1210
ID: 11751738
Ok this is what I am trying to achieve,

MS Exchange 2003 internal mail server sends mail from user@domain.com (not valid e-mail address)

therefore replys get nowhere, so if I change the default smtp address on the active directory to the valid e-mail address which users collect their incoming mail from (external imap server) for example user@imap.domain.com (valid address)

now if user sends an e-mail to user2@imap.domain.com, exchange sees this in Active Directory and does not let the message leave the exchange box and deliveres it locally, users do not check the local mailbox for incoming messages these come in via the IMAP address, therefore I want to achieve the following

Primary SMTP address on users @domain.com, messages sent from @imap.domain.com so replys will work

Thanks
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Sembee earned 500 total points
ID: 11754851
Why are email messages to the IMAP address not coming in to the Exchange server? I presume this IMAP address is another server?

The only way that I can think you can get it to work is by using a third email address, contacts and forwarding. I am typing this on the fly, so it may be garbage until I can think it through...

You are not going to be able to get Exchange to stop sending email to the local mailbox. Exchange will ALWAYS look at its own directory to see if the email address is valid. If it is then it will deliver it to that email box. It will never look anywhere else for that email.

Therefore you must forward that email elsewhere. To get Exchange to send the messages outside itself this will need to be another domain.

It could be a subdomain of your main domain... whatever. However because you are only using this domain to fool Exchange it does not need to exist outside of your DNS.
You will need to create MX records for this new subdomain to point at the IMAP mail server. The IMAP mail server will also need to be configured to accept email for this new subdomain.

Once the DNS changes have been made, create mail enabled contacts for each user with an email address of username@sub.domain.com - where username is the email address in front of the @ on the IMAP server.
Each of these contacts will be attached to the relevant mailbox to forward the messages out. The email will hit the mailbox, a copy will delivered locally and then sent out to the IMAP box.

Its a cludge but should work.

Your best solution would be to use Exchange for what it is designed for - and that is handling all email - inbound, outbound, internal external.

Simon.
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by:nemesis1210
ID: 11830478
Had to use contacts and another e-mail address, which is kinda what I was doing with the 2000 domain but wanted to make it tidier and was hoping for a solution in 2003 oh well never mind, thanks for your help

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