---
title: How to specify host names, IP addresses, and 'Mail From' addresses that must use STARTTLS to send and receive mail in MDaemon
description: Use this screen to specify hosts, IP addresses, and MAIL FROM addresses that require the use of the STARTTLS extension in order to send or receive mail to or from your server.
---

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# How to specify host names, IP addresses, and 'Mail From' addresses that must use STARTTLS to send and receive mail in MDaemon

## Use this screen to specify hosts, IP addresses, and MAIL FROM addresses that require the use of the STARTTLS extension in order to send or receive mail to or from your server.

From the MDaemon console, follow these steps:

1. Click **Security** on the menu bar.
2. Select **Security Manager** (Settings)
3. Expand SSL & TLS
4. Select **STARTTLS List**
5. Enter a host name, IP address, or 'Mail From' address on each line.  
   ![mdaemon starttls list required ssl tls](https://knowledge.mdaemon.com/hs-fs/hubfs/KBAs/security_starttls_list.png?width=688&name=security_starttls_list.png)
6. Click **Ok**

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