How to raise a request to Unblock Port 25 for Email Sending if I am on Free Trial subscription

Question

Dear Azure Support/Community,

I am hosting a WordPress website on Azure, and after migrating my site to Azure, I have encountered an issue with sending emails using the PHP mail() function. The issue I think is due to Azure's default restriction on outbound traffic through port 25.

I use the native PHP mail() function for transactional emails without any third-party SMTP services or plugins. The emails are critical to the functionality of the application, and I am unable to send them due to this restriction.

Here are some more details

Use Case: Sending legitimate transactional emails.

Subscription Type: Free Trial

PHP Configuration: The mail() function is correctly configured and uses sendmail.

Alternative Ports: the existing setup relies on port 25 for direct mail transfer.

Reason for Request: Unblocking port 25 is essential for my WordPress application to send transactional emails without relying on third-party email services.

Since I am on Free trial I can create any support request to open port 25. Is there any alternate way to open the port.

Answer 1

Hi @Aathira ,

as far as I know it's possible to open port 25 for Enterprise Agreement or Microsoft Customer Agreement for enterprise (MCA-E) subscriptions only.

For all other types of subscriptions it's not possible to open port 25 on request.

Source: All Other Subscription Types

The recommendation/workaround is to use an authenticated SMTP relay services: Recommended method of sending email

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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards

Andreas Baumgarten