VPS network configuration

Question

VPS network configuration

Anis Ben Bechir 0

Hello,
I need your help for my vps networking, my vps can't connect to any external ip ( like telnet google.com 25) :
A vps hosted in another platform : Trying 142.250.184.110... Connected to google.com.

My vps hosted on Azure :
telnet google.com 25 Trying 142.250.187.206...
(Nothing will prompt ever after few mins)

How can i fix this please ?

deherman-MSFT 38,021 Reputation points Microsoft Employee Moderator

2023-05-02T15:19:38.64+00:00

@Anis Ben Bechir + Checking in to see if the answer below helped.

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deherman-MSFT 38,021 Reputation points Microsoft Employee Moderator

2023-05-02T15:19:38.64+00:00

@Anis Ben Bechir + Checking in to see if the answer below helped.

If you still have questions, please let us know in the "comments" and we would be happy to help you. Comment is the fastest way of notifying the experts.

If the answer below has been helpful, we appreciate hearing from you and would love to help others who may have the same question. Accepting answers helps increase visibility of this question for other members of the Microsoft Q&A community.

Thank you for helping to improve Microsoft Q&A!

Answer 1

@Anis Ben Bechir

I see that you are testing outbound connectivity on TCP Port 25 on your virtual machine.

Outbound SMTP traffic on TCP port 25 is blocked by the Azure platform to ensure better security for Microsoft partners and customers, protect the Azure platform, and conform to industry standards. This block applies to Azure Virtual Machines. More information and suggestions can be found here.

Microsoft recommends using authenticated SMTP relay services for sending email from Azure Virtual Machines. These services typically connect through TCP port 587, but they may also support other ports. Authenticated SMTP relay services, such as Exchange Online Protection and SendGrid, specialize in sender reputation to minimize the possibility that third-party email providers reject messages.

Using authenticated SMTP relay services is not restricted in Azure, regardless of your subscription type. If you need to send emails from your Azure VMs, consider using one of these services as an alternative to sending emails directly over TCP port 25.

Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.

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VPS network configuration

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