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Allow external company send mail as internal company

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  • Yes, it's possible.  In fact, anyone, including me, can send as domino1.com.  But for others to accept that mail as non-spam, you'll need to configure your SPF record and perhaps DKIM so that your partner firm is recognized as a valid sender.

    I don't understand this word, "remitent".  Please restate your second part of the question with real words and I'll try to complete the answer.


    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    Wednesday, September 7, 2016 6:18 PM
    Moderator
  • sorry....remitent = sender
    Thursday, September 8, 2016 5:12 AM
  • It looks like what you want is known as address rewriting.  The only place I know where that's supported in Exchange is in the Edge role.

    https://technet.microsoft.com/en-us/library/aa996806(v=exchg.160).aspx

    Some third-party message hygiene servers, appliances and cloud services can do that for you as well.

    An easy way to do it is to create separate mailboxes with the different addresses as reply addresses.


    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    Thursday, September 8, 2016 6:35 AM
    Moderator