Hi everyone, I have a problem with setting up a virtual smtp on my IIS server 2019..
I want it to be compatible with my 365 mailbox, and unfortunately I have not found any solutions online :(
First of all, what are the settings that should be in IIS (according to 365)?
In outbond connection tcp port 587/25?
I have already created a connector in 365 admin, I need to insert the MX somewhere?
step by step will be amazing!!!
Tnx for help!
@Shaiderhi-1776 , just circling back to check to see how things are going on with this thread. Did you test Kael's steps? If the issue has been resolved, please mark the helpful replies as answers.
Did you follow the steps in this link to create a receive connector?
If yes, here is my configuration in IIS SMTP server:
1. In General, add local ip address of the IIS SMTP server and listen on port 25
2. In Access>Access control, select Anonymous access
In Access>Relay, add the ip addresses of the devices which are allowed to relay via the IIS SMTP server
3. In Delivery>Outbound Security, select Anonymous access
4. In Delivery>Outbound connections, configure TCP port to 25
5. In Delivery>Advanced, configure Smart host to be the MX record of your domain
6. test sending an email and see if the recipient can receive it
This method doesn't require an existing mailbox in Office 365.
If you would like to use an existing mailbox, you may need to use SMTP AUTH.
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