Mac Mail - Snow Leopard 10.6 - Alternate Port - Setup Guide

Are you using the latest version of Apple's Mac OSX?
Please see our Mojave 10.14 Mac Mail SMTP server setup guide here.

Important Points

  • First you need to make sure the email address(es) you will be sending from have been authorised for your account in our Control Panel .
  • These instructions assume your email account has already been setup and is collecting email correctly.
  • Take a note of any settings you change.
  • Only change the items specified - you should not need to change either your email address, POP3 server, POP3 username / password.
  • We have instructions for both default SMTP port and alternate SMTP port configurations - alternate port is generally used if your ISP blocks the normal port 25 SMTP access (as many do these days!).

Step 1

  • Open Mac Mail on Snow Leopard by clicking the Icon
Mac Mail - Step 1 - Open Mail

Step 2

  • Go to the Mac 'Mail' menu and click 'Preferences'
Snow Leopard 10.6 - Mac Mail - Step 2 - Open Mail menu and click Preferences

Step 3

  • Click on the Mac Mail account you wish to edit, you may have multiple accounts so if you do you will need to edit each one separately
  • Click on the 'Outgoing Mail Server' drop down menu and select 'Edit SMTP Server List...'
Snow Leopard 10.6 - Mac Mail - Step 3 - Click edit SMTP Server List

Step 4

  • Click on the plus (+) button to add another SMTP server
  • For the description enter 'AuthSMTP'
  • For the Server Name enter ''
Snow Leopard 10.6 - Mac Mail - Step 4 - Enter Outgoing Mailserver

Step 5

  • Go to the 'Advanced' tab
  • Click on 'Authentication' and select 'MD5 Challenge-Response'
Snow Leopard 10.6 - Mac Mail - Step 5 - Set Authentication to MD5 Challenge-Response

Step 6

  • Enter the AuthSMTP Username and Password that has been emailed to you
Snow Leopard 10.6 - Mac Mail - Step 6 - Enter AuthSMTP Username and Password

Step 7

  • Click on the radio button for 'Use Custom Port' and enter the port number as '2525'
  • Click OK
Snow Leopard 10.6 - Mac Mail - Step 7 - Change SMTP port to 2525

Step 8

  • You have now setup the AuthSMTP outgoing mail server
  • Close the window
Snow Leopard 10.6 - Mac Mail - Step 8 - Complete setup of SMTP Server

Step 9

  • When prompted click 'Save' to keep the changes
Snow Leopard 10.6 - Mac Mail - Step 9 - Save changes to SMTP outgoing mail relay account

Step 10

  • When you first click 'Get Mail' or go to send an email you may need to re-enter your AuthSMTP password
Snow Leopard 10.6 - Mac Mail - Step 10 - Close window to complete setup of AuthSMTP outgoing mail relay service

Step 11

  • All Done!