Prolateral Consulting Ltd
Prolateral Consulting Ltd
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Setup examples

Prolateral offers primary and backup domain (DNS) services, with servers in key geographic locations providing the best service possible.


How do I set up outbound SMTP on 3CX?
How do I set up outMail on 3CX VoIP phone system?


Follow the guide below to configure the 3CX VoIP phone system to send emails using the outMail service.

Please note, you can only change the SMTP server information in 3CX if you have a Pro license or higher.  If you have a free license then you can only use the 3CX SMTP servers.

Using a browser navigate to the 3CX Management Console and login.

3CX Management Console - Login Screen


From the left menu select Settings.


3CX Management Console - Settings Menu


In the Settings section click on the tile labelled "Email".


3CX Management Console - Email Settings

Select the Mail Server tab

In the Settings section change the drop down menu to Custom SMTP server.

In the Mail Server field change the SMTP server to (Your assigned outMail server will be in your welcome email and also the management portal)

Provide 3CX with a reply to address.

Enter the username and password you were provided for outMail and click OK.

Please refer to your welcome information on encryption levels.

3CX Management Console - Custom SMTP Settings

Click OK to finish.


Summary of server details

Outgoing server

As provided in your signup email.

Outgoing server protocol


Outgoing server port

25, 465, 587, 2525 or 8025

Authentication Type

Basic Authentication, SSL and TLS supported


As provided


As provided

Uninstalling / Removing outMail

To change your outgoing SMTP server settings away from outMail simply follow the setup guide above and where asked to enter the outgoing SMTP mail server address and login credentials please use those provided to you for the service provider you are moving to.

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The Origin of this information may be internal or external to Prolateral Consulting Ltd. Prolateral makes all reasonable efforts to verify this information. However, the information provided in this document is for your information only. Prolateral makes no explicit or implied claims to the validity of this information. Any trademarks referenced in this document are the property of their respective owners.