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Dear support,
Our solution is using outbound SMTP port 25 for sending out system email. Please kindly help us to unblock port 25 for this network interface: trex-demo605_z1
Thank you
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Firstly, let me know which subscription you are using.
For VMs and Azure Firewall that are deployed in standard Enterprise Agreement or Microsoft Customer Agreement for enterprise (MCA-E) subscriptions, the outbound SMTP connections on TCP port 25 aren't blocked. However, there's no guarantee that external domains accept the incoming emails from the VMs and Azure Firewall. For emails rejected or filtered by the external domains, contact the email service providers of the external domains to resolve the problems. These problems aren't covered by Azure support.
For Enterprise Dev/Test subscriptions, port 25 is blocked by default. It's possible to have this block removed. To request to have the block removed, go to the Cannot send email (SMTP-Port 25) section of the Diagnose and Solve section in the Azure Virtual Network resource in the Azure portal and run the diagnostic. This process exempts the qualified enterprise dev/test subscriptions automatically.
Please refer this link for more detailed information- https://learn.microsoft.com/en-us/azure/virtual-network/troubleshoot-outbound-smtp-connectivity#enterprise-and-mca-e
If you have any further queries, do let us know.
Dear @Nikhil Duserla , I'm using Azure Sponsorship subscription (https://www.microsoftazuresponsorships.com/).
I've tried the Diagnose and Solve section as mentioned. However, it doesn't seem unblocked SMTP port 25.
Hi @Nikhil Duserla , is there anyone can help me on this?
Thank you
Hi @Tan See Youu 陈诗右, I will be working on your issue and will be back shortly with a solution.
Hi @Tan See Youu 陈诗右,Please continue the discussion on private message.
Hi @Tan See Youu 陈诗右, Did you enable port number 25 as I provided in the steps above, and is it working as required? If you require more assistance, please let me know.
Hi @Tan See Youu 陈诗右,Please follow below steps as shown in screenshots.
Let me know if you have any further issues. I am happy to assist you back.