I would know the same, do we still need an Edge Transport in this scenario?

Many thanks

Is it actually worth installing an edge transport server (we don’t have one at the moment)or just make sure that the new 2016 servers form the hybrid with o365 and tie the firewall rule down between o365 and our exchange 2016 servers?

An SMTP address can only exist on one mailbox at a time. If you are receiving email sent to user@domain1.com in other mailboxes as well, then there is likely a transport/mail flow rule set up that is forwarding copies of the emails, an inbox rule, or a forwarding rule set on the mailbox. Mail doesn’t magically deliver to mailboxes that it wasn’t sent to. I can’t see your environment so I can only provide guidance. You need to look into this further than just looking at SMTP addresses on mailboxes.

It should deliver the email to whichever mailobx has that SMTP address, but it doesnt, it deliver the email to all SMTP address even each SMTP has his own mailbox. Example: i send to user@domain1.com and i get the same email to all smtp user@domain2.com, user@domain3.com etc.

I really appreciate your time,
Emanuel

I don’t really know what you mean by “filter the incoming mail”. Exchange will deliver the email to whichever mailbox has that SMTP address. If the user needs to send and receive with multiple different SMTP addresses, then each SMTP address needs to be set up on a separate mailbox. That’s the only way to achieve the sending *and* receiving.

Thank you for your reply,

If i do as you said, if the user set his account on his mobile phone he wont have the option to chose “from” alias. So i created x SMTP adresses, so they can configure the main smtp as “exchange server” in phone and for the rest of smtp they can add them as pop/imap. When they want to send from ” y alias” they can simply chose “from” on iphone/android. But my problem is that the exchange server can’t filter the incoming mail to deliver to the specific mailbox/smtp adress. I will dig more and if i get some results i will posted here.

Thanks,
Emanuel

A mailbox has one primary SMTP address and can have multiple secondary SMTP addresses (also known as “aliases” to some people). Email sent to any of the SMTP addresses will be delivered to the mailbox. When the user sends email, it only goes from the primary SMTP address.

If you need the person to have multiple email addresses to send from, then you’ll need to set up separate shared mailboxes for each address, and give them SendAs permissions to each one. Exchange doesn’t let a user choose which of their email addresses to send from, it has to be a separate mailbox.

I have a situation and i dont know if i need Edge Transport for this:
i have multiple accepted domains in my EX2016 server and each user must use all those SMTP adress as a receiver and sender. The thing is, when a user receive and email to an SMTP ex: user@domain.com, the mail goes to all his inboxes. I want to set the Exchange server to filter and deliver the mail into the right inbox.

Thanks a lot,
Emanuel