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Receiving Email From Another Domain To Our Exchange

sydleg
sydleg asked
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Last Modified: 2017-04-25
Hi All,

Fairly new to this and never done this before, we have a office with a .com domain which we are coming on board with us and they would like their mail routed through our exchange server as they are moving internet providers as well but still obviously want to keep their domain info etc.

We are running exchange 2013 and any help besides the obvious changing the MX records on their end will be most helpful.

Not sure where to turn regarding getting their mail flowing through our exchange other than changing their MX records etc.

Thanks
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Vikas BhatExperienced IT Infrastructure Services/operations Manager
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Technical Architect
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Pete LongTechnical Architect
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Commented:
To Add a domain in Exchange 2013

Log into Exchange Admin Center  >Mail Flow > Accepted domain  >Add
Give it a sensible name then type in the new domain name and select 'Authorative' > Save

To Add a mailbox for the new domain

Recipients > Add > User Mailbox > New User.
Edit the User > Email Addresses > Add an email address for the new domain
Untick 'Automatically update email addresses based'
Select the new email address as the reply address.
Pete LongTechnical Architect
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Commented:
Here you go I've written it up for you

Exchange 2016 / 2013 Adding a New Email Domain

Pete

Author

Commented:
Pete Long thats amazing, thanks for that.

So i have done that now, and i have changed the MX records on the other domain.

Do i need to still create DNS (A) records on my mail server for the new domain ?
Pete LongTechnical Architect
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Commented:
Hi,

Not usually, no, your Exchange server resolves MX records externally through your DNS but not for domains it is authoritative (why is that so hard to spell!) for :)

Thanks for the inspiration :)

Pete

Author

Commented:
Receiving an error stating the mail could not be delivered  "because the remote server is misconfigured" 550 relay not permitted ?
Pete LongTechnical Architect
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Commented:
Hi

Someone external got that error when sending in from outside?

1. where it you mx record pointed to exchange for an email filter (company or appliance).
2. Ensure your new domain has been made authoritative on your exchange.
3. Restart the Transport service on you exchange.

P

Author

Commented:
I can personally send from the address and it reaches its destination.

but when i try send to that address it bounces back internally and externally (Sending from gmail)
Vikas BhatExperienced IT Infrastructure Services/operations Manager
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No response