Is it possible to reply or create emails to emails address on other domains?

Hi, I am trying to figure out a way so that I can have one Microsoft exchange email account setup in outlook with example domain123.com and have my google and hotmail email accounts forwarded to my domain123.com exchange account.  I already know how to setup forwarding from these hotmail and google mail accounts to this domain123.com account but what I don't know how to setup is how to reply to a hotmail or gmail account from outlook as the hotmail or gmail account and not the domain123.com exchange account so that the person I am replying to still thinks its coming back from the hotmail or gmail account.  I do not want to setup the hotmail or gmail accounts in outlook at all.  I just want the one exchange domain123.com account and have the ability to reply to any account or even create a new email from those accounts .  Is this possible?  Do i need special software to do this or is there a trick to setting this up.

Please let me know

Thank you
snipa911Asked:
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Scott CSenior EngineerCommented:
No, this isn't possible.  What you are trying to do is "spoof" an email and Exchange isn't gong to provide a way to do this.

In Exchange you can "send as" or "send on behalf of" another Exchange user.  There is no way to accomplish this using an email address external to your Exchange environment.

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David Johnson, CD, MVPRetiredCommented:
add them as connected accounts and you can now send as them 'on behalf of'
snipa911Author Commented:
How do you add them as connected accounts?  Is this something i can do in outlook
David Johnson, CD, MVPRetiredCommented:
From OWA (tested working from O365)
MacroShadowCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Split:
-- ScottCha (https:#a41370422)
-- David Johnson CD MVP (https:#a41370554)


If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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