> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://helpdesk.closum.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# SMTP Settings

When configuring your SMTP sending system, use the following data:


**SMTP server:**

`http://ssmtp-mail.closum.com`

OR

`http://smtp25-mail.closum.com`



**Ports**:

`TLS: 587`
SSL: 465

Unencrypted: 25


**Connection limits:**

* 20 concurrent requests from the same IP
* Multiple Emails can be submitted in one session
* Request timeout is 2minutes