Apr 16, 2020  “Cannot Verify Server Identity. The identity of “mail.macreports.com” cannot be verified by Mail.” How to fix. It is important to follow these instructions in order. Test the Mail app between steps to see if the issue is resolved. Open the Apple Mail application by clicking Mail in the top menu bar. Select the Preferences option. The Accounts page opens: Click the @ Accounts option in the top bar. Select your outgoing mail server from the available options within the Outgoing Mail Server (SMTP) drop-down list. This should be smtp.dreamhost.com.

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Mail User Guide

You can change preferences for the SMTP mail server you use to send messages, as directed by the provider of your email accounts.

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.

Option

Description

Server list

The servers available to you and the accounts that are using them.

Add , Remove

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.

Server Settings

Option

Description

Description

The description of the server appears in the Mail sidebar and any pop-up menu where you choose a server.

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:

  • Port (or Internal Port and External Port), Use TLS/SSL: The port numbers for sending messages, and whether to use TLS/SSL.

  • Authentication: The authentication method. This option is available only for POP and IMAP accounts.

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Advanced

Option

Description

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 user name and password to connect to the mail server.

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See alsoVerify an email account’s outgoing server in Mail on Mac