To simplify the use of your SMTP Auth Relay, we recommend creating a separate account in your Mac Mail.app email client. This separate account has both an IMAP and SMTP server.  

If you are a user of the MailRoute Managed Email Membership Service (MEMS) (such as a member of a professional organization or alumni group) and using only the MEMS email forwarding service, the IMAP account will not store any of your email - it will be forwarded appropriately.

Users of the MailRoute Hosted Email Service have full IMAP mailbox and storage capabilities.

TL;DR (Too Long, Didn't Read)

Choose whether you wish to manually configure your email client or use a "mobileconfig" profile to set up your email client.  The latter is simpler, but locks your email client configuration in place.  The former has more steps, but is most flexible.

If you choose to use the mobileconfig method, download the mobileconfig profile or email it to yourself and install the profile using the System Settings -> General -> Device Management.  You'll need to provide your MailRoute password.

If you choose to configure it by manually, gather the info from our Control Panel by clicking the SMTP Auth Relay tab on the left menu.  You'll have to click the eye icon to view your passwords.  If you don't have a local password set up, you'll be asked to create one.  The Inbound (IMAP) and Outbound (SMTP) servers may have different logins and will have different passwords.   Go into your Mail.app, add a new account using those settings.

One configured, when you send email, click the From address to choose your new account for sending email.  It'll pass SPF, DKIM, DMARC checks.  Congratulations!

First Step - Choose how you wish to configure your email client.

Choose whether you wish to manually configure your email client or use a "mobileconfig" profile to set up your email client.  The latter is simpler, but locks your email client configuration in place.  The former has more steps, but is most flexible.

Long Version - Mobileconfig method

Step 1.  Obtain your Configuration Profile (.mobileconfig) file

1. Login to the MailRoute Control Panel
   
   
2. Click on "My Setttings" at the top menu, and then on "SMTP Auth Relay" on the left menu:
   
   
   
   
3. Download or email the Configuration Profile (.mobileconfig file) to your device. You may either download it directly to your device, or send it to yourself as an email attachment.  Safari and the Apple mail clients are able to directly install the mobileconfig files.
   
   

Step 2.  Installing Configuration Profiles on macOS

1. When a user downloads the profile using Safari or opens the attachment using Mail, the Mac recognizes the file’s .mobileconfig extension as a profile and asks the user to confirm that it’s OK to install it.  You may see a notification on screen, directing you to System Settings to install the profile:
   
   
   
   
   
   
   
2. Go to System Settings and locate the Profile.  Apple has put it in different places in different versions of MacOS.
   
   MacOS 15 - Sequoia:  System Settings -> General -> Device Management
   MacOS 14 -  Sonoma: System Settings  ->  Profiles & Security -> Profiles
   MacOS 13 - Ventura: System Settings  ->  Profiles & Security -> Profiles
   MacOS 12 - Monterey: System Preferences -> Profiles
   MacOS 11 - Big Sur: System Preferences -> Profiles
   
   Here's one example.  Forgive us for not including separate ones for each version of MacOS.
   
3. You'll see this new profile in the list.  Double click it to review and install
   
   
   
   
4. Verify the settings and then press Install
5. You may be asked to fill in some additional info for your account.  Give the account a Descriptionlike "ACM Outbound Email Relay".
   Enter your Full Name and your Incoming Server Password.  This is the password from Gather the info you need to configure your email client above.
   
   Click Install
   
   
   
   
   
   
6. Launch your Email App, and your new account will be there.  You may be asked for your passwords again. 
   
   
   
7. And now you're ready to go. 

Long Version - Manual Configuration

Gather the info you need to configure your email client

To configure your email client to use the MailRoute SMTP Auth Relay service for outbound email relay, you will need to gather some info from the MailRoute Control Panel and then configure your email client. 

1. Login to admin.mailroute.net and click the My Settings link at the top of the page.
   
   
2. Click the SMTP Auth Relay tab in the Settings menu on the left side of the page. 
   
   
   
   
3. Gather your info!  You can click the copy icon  to copy the values of any field.
   
   There are separate Inbound (IMAP) Server and Outbound (SMTP) Server configurations.  You'll need both:
   
   
   Inbound (IMAP) Server Password:  Click the eye icon to display your password .  If you haven't set a local MailRoute password yet, you will be prompted to do so.   Your Inbound (IMAP) Server password may be the same as your Control Panel login password.  You'll be shown this, if this is the case.  
   
            
   
   Outbound (SMTP) Server Password:  Click the eye icon to display your password. Accept the Terms of Service:
   
            
   
   By the way, you can generate a new password for your Outbound (SMTP) Server at any time.

Configure your email client

1. Open the Mail.app email client on your Macintosh.
   
   
2. Choose Settings from the Mail menu in your menu bar.  We're going to add a new mail account to your email client.  This is going to feel a little more complicated than it should be.  The Apple Mail client tries to guess your settings, and warns you when it can't, so you have to go through a few windows to get to the screen where you're going to actually configure everything properly.
   
   
3. Choose Accounts from the icons at the top, and then press the + icon at the bottom left of the window to add a new account:
4. Choose Other Mail Account... and click Continue from the dialog box:
   
5. In the Add a Mail Account dialog, pick a descriptive name for this new mail account.  I used ACM Outbound Email Account.  Enter your ACM email account, and your Inbound (IMAP) Server password.
   
   Click Sign In and be ready for it to open a new dialog with a warning at the bottom of Unable to verify account name or password.  This is expected.
   
   
6. The email address you entered in the previous window should be displayed. Make sure the Account Type is set to IMAP, and set the Incoming Mail Server and Outgoing Mail Server to the values you noted before.  Click the Sign In button. You'll see the dialog refresh with another Unable to verify account name or password.  This is expected.  Click Next:
   
   
7. Another dialog pops up, just click Done:
   
            
   
   
8. Now we're finally going to get to set all the final settings for your account!  
   
   Select your new account from the list of accounts, and choose Server Settings from the tabs at the top.  Here's where you'll enter all the proper information to configure your account.
   
   Incoming Mail Server (IMAP)
        User Name:  enter your Inbound (IMAP) Login
        Password:  enter your Inbound (IMAP) Password
        Host Name: enter your Inbound (IMAP) Server Name
   
   Outbound Mail Server (SMTP)
        User Name:  enter your Outbound (SMTP) Login
        Password:  enter your Outbound (SMTP) Password
        Host Name: enter your Outbound (SMTP) Server Name
   
   Then click Save
   
   
   
9. Now you can close your Settings/Accounts window and use your account!

Using your new account to send email

When you compose a new email, you'll have a menu where the From address is displayed.  Click it and choose your new account from the popup menu: