Change Outgoing server settings in Mail on Mac
You can change preferences for the SMTP mail server you use to send messages, as directed by the provider of your email account.
To change these preferences in the Mail app on your Mac, choose Mail > Preferences, click Accounts, click Server Settings, click the outgoing Account pop-up menu, then choose Edit SMTP Server List.
Server list | The servers available to you and the accounts that are using them. |
Add | Add or remove a server. Don’t remove a server that’s in use by an account unless you’re ready to select or add another one immediately. |
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Server Settings
Description | The description of the server appears in the Mail sidebar and any pop-up menu where you choose a server. |
Username | Your username on the mail server. |
Password | Your password on the mail server. |
Host Name | The name of the mail server. |
Automatically manage connection settings | Mail automatically manages settings for your email account in Mail, such as port numbers and authentication methods. If you deselect this option, you can specify the following, as directed by your email account provider:
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Advanced
TLS Certificate | Some SMTP servers require computers that connect to them to provide a certificate proving their identity. |
Allow insecure authentication | For accounts that don’t support secure authentication, let Mail use a non-encrypted version of your username and password to connect to the mail server. |