If you browse through the internet you would find numerous articles with different methods to set up SMTP relay from POSTFIX or to connect your application or device and relay your mails. Three types of Integration supported by Office365. Testing the Score of your SMTP setup or Spam Test Result.Reload or the Restart the Postfix server and test the relays.Create the Sasl_Passwd_maps file with relays and credentials.Create a relay_by_sender file for Postfix and Keep the Mail Server (MX) details.
POSTFIX MAIN.CF EXAMPLE DEBIAN UPDATE
Update the main.cf configuration of Postfix to Support Sender based relay.Multiple Domains and Sender Based Relay PostFIX Office365.Restart Postfix and Send some email to test it.Whitelist your Server URL in the office365.Updating SPF record with your public IP ( to avoid your email ending as SPAM ).Simple SMTP relay with Postfix Office365.Office 365 SMTP relay ( Discussed in this Post ) Three types of Integration supported by Office365.Knowing which one you are using would help you to fix the problems faster when you run into one. Check your email Score (or) Spam test resultīefore we proceed with these three steps I would like to take you on a quick tour around the three different connection methodologies you can have with Office365.Troubleshooting SMTP relay and Fixing Email Delivery Problems.Configuration Postfix SMTP relay for multiple domains and sender-based relay.Configuring Postfix SMTP relay to Office 365 and testing it with Single email ID/Domain.I am going to split this article into four parts or subtopics Let us cover the basic setup and send our test emails. I recently had a requirement to set up an Organization-wide mail server to perform SMTP relay to Office365 and allow our Java, JS, Python applications to send emails from different office365 email ids based on the Subject (or) the sender details.īefore we think about the multiple email IDs and sender-based relay in postfix. Postfix is a powerful opensource mail server with a lot of customization options available built-in.
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