1. In your iPhone or iPad, go into your Settings app

  2. In Settings, select Passwords & Accounts

  3. Then select the email account you want to amend

  4. Once you have selected the email address, select the Account

  5. You will then see your email server settings, under Outgoing Mail Server, select SMTP

  6. In them options, change the Server Port to 587

  7. Then select Done

  8. Finally select < Account then Done


  1. In Mac Mail, select Preferences

  2. In the preferences, select Accounts

  3. Then select the Outgoing Mail Server (SMTP) drop down menu, then Edit SMTP Server List

  4. Select the SMTP server for this account

  5. Change the Port to 587

  6. Once done, select OK