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Understanding our VPS mail port restrictions, and how to be whitelisted

To help prevent spam and maintain the reputation of our IP addresses, we have implemented outbound mail port restrictions for common mail ports such as 25, 465, 2525, and 587. In this knowledge base article, we'll explain the reasons behind these restrictions and provide details on how you can request a whitelist for these ports if needed.

25This is the standard Simple Mail Transfer Protocol (SMTP) port used for sending email.
465This port is often used for SMTP over SSL/TLS, providing encrypted communication for sending email.
2525An alternative SMTP port used by some email service providers to bypass port 25 restrictions.
587The default port for Submission for Mail (RFC 6409), used for submitting email messages to a mail server for delivery.

There are several reasons why SpeedyPage has implemented outbound mail port restrictions:

Preventing Spam: Blocking these ports helps to prevent our servers from being used to send unsolicited bulk email (spam). This protects both our customers and the recipients of such emails.

Maintaining IP Reputation: By preventing spam, we can maintain the good reputation of our IP addresses, which is crucial for successful email delivery. A good IP reputation ensures that your legitimate emails have a higher chance of reaching their intended recipients.

Security: Restricting these ports helps protect our network from potential security threats, such as unauthorized access or malware distribution via email.

Requesting a whitelist

If you require access to ports 25, 465, 2525, or 587 for legitimate email purposes, you can request a whitelist for your VPS by contacting our support team.

You can create a ticket with our support team here: Create Ticket

In the ticket, use subject Whitelist Request for Outbound Mail Ports and use the following format in the ticket body:

The VPS IP address that you wish to whitelist:
Intended use for the outbound mail ports (e.g., transactional emails, newsletters):
Specify which ports (25, 465, 2525, or 587) you need access to:

We will review your request and provide further instructions or grant the whitelist, depending on the request.

Updated on: 30/07/2023

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