Office 365 : Allow external system to use exchange online

We have recently moved onto Office 365. We have a loud based system called Recruit So Simple.

Previously we were able to send out emails from within this system. It also logged emails too.

I have been told that I need to allow SMTP acesss from external clients.

I will then need the following details to configure our recruitment system. How do I achieve this in Office 365?

- Outgoing (SMTP) server name:
- Port number:
- Encryption: (None, SSL, TLS)
- SMTP requires authentication (Yes/No)
- Username and password
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Vasil Michev (MVP)Commented:
There are several ways to use O365 as SMTP relay, check here for more info:

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roy_battyDirectorAuthor Commented:
OK SMTP client submission seems to be the option that fits here.

However the recruitment system previously sent out emails under the email address associated with the user logged in. Will SMTP client configuration allow this to continue?

Also do I need a separate account in O365 just for this system ?
Vasil Michev (MVP)Commented:
It really depends on what the other party supports. But yes, SMTP client submission requires a licensed O365 account and messages will be coming out from that account. If you need to send messages on behalf of other users, you can either use Send As/Send on behalf permissions (but it will depend on the method the other party uses to send messages), or use the SMTP relay method instead.
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