Prepare for Distribution. A Developer ID certificate lets Gatekeeper verify that you’re a trusted developer when a user opens your app, plug-in, or installer package downloaded from outside the Mac App Store. Software signed with a Developer ID certificate can also take advantage of advanced capabilities such as CloudKit and Apple Push Notifications. Apple has a built-in way to protect you from opening up potentially malicious apps on your computer in Mac OS X Lion, Mountain Lion, Mavericks, Yosemite, El Capitan, and macOS Sierra. This setting, named Gatekeeper, will never stop you from installing apps from the Mac App Store, but it could from anywhere else. If it's an app you're sure you want to install on your system, here's how to do it.
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Mail User Guide
Use Server Settings preferences in Mail to change options for an account’s incoming and outgoing (SMTP) mail servers.
To change these preferences in the Mail app on your Mac, choose Mail > Preferences, click Accounts, then click Server Settings.
Note: The settings you see vary depending on your account type.
Incoming mail server settings
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Option | Description |
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User Name | Your user name 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 IMAP or Exchange Settings | Enter or change these settings as directed by your email account provider:
|
Outgoing mail server (SMTP) settings
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Option | Description |
---|---|
Account | The account of the mail server. To change outgoing server settings, as directed by your email account provider, click the Account pop-up menu, then choose Edit SMTP Server List. |
User Name | Your user name 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:
|