How to Setup Alternate-Port SMTP


The purpose of this guide is to provide you with general instructions for configuring Alternate-Port SMTP. If you have our POP3/IMAP service and are trying to setup up smtp or mail sending using that service, please use our POP3/IMAP guide instead.

Setup

Before you can start sending mail, you will need to create a password for the Alternate-Port SMTP service.

To create a password:

  • Login to No-IP.
  • Navigate to the left side menu to email.
  • Select the Actions button next to your domain.
  • Select Configure in the drop down menu that appears.
  • Enter a new password and enter the same password below to confirm it.
  • Click Change Password when finished.

Within your mail server you will need to use the following settings to send an email:

Outgoing SMTP Server: smtp-auth.no-ip.com
Port Number: 25, 465, 587, 3325 (preferred)
Username: yourdomain.com@noip-smtp
Password: ThePasswordYouCreated

 Many email servers reject all emails from domains that aren’t authenticated by an SPF record. So you will need to add the following record to your domain. 

If your domain is managed by No-IP, the SPF record can be added in your No-IP account from the DNS Records page:

  • Click Add Record button next to your desired domain.
  • Under the Type field you can scroll and select TXT. In the Host field add the hostname your mail server is using; to add the record on you apex domain, enter in “@”.
  • In the box labeled Value, paste this SPF record: v=spf1 include:no-ip.com -all
  • Finally, click Create.

If your DNS is managed elsewhere you’ll have to add that same record with your DNS provider.

More Information

For guides on how to configure some popular mail clients to use an SMTP service. Checkout out the links on our Alternate-Port SMTP Server Guides article.