Changes to SMTP Ports

As of 1st October 2019, any mail client sending via SMTP through an internetM8 (provided by Heart Internet) mail server should use port 587 instead of ports 25 or 465. Details on how to change this will vary on your mail client, but we've detailed some of these further down this article.

It is also advisable to use STARTTLS for your encryption method (this option is not available or required for users of Apple Operating Systems at this time).

Outlook (Office 97, Office 2000, Office 2013) IMPORTANT: NOT Office 365 - see next item

  1. Select File
  2. Select Account Settings
  3. Select Account Settings from the dropdown
  4. Select your email account from the lists in the Email tab and select Change
  5. Select More Settings
  6. Select Advanced
  7. Change the Outgoing server (SMTP) option to 587
  8. Change the encryption types on both IMAP and SMTP to STARTTLS
  9. Select Ok
  10. Select Next
  11. Once tests have completed select Close and then Finish
  12. You may see a mesage about Outlook being unable to verify the Security Ceritifcate - you will have an opportunity to install the cerificate . (Instructions and the reasons for this are detailed here).

Outlook (Office 365  & Office 2016)

  1. Select File
  2. Select Account Settings
  3. Select Account Settings from the dropdown
  4. Select your email account from the lists in the Email tab and select Repair
  5. Select Advanced Settings
  6. Check the Check Box 'Let me repair my account manually'
  7. Click Repair
  8. Click on 'Outgoing Mail'
  9. Change the Port to 587
  10. Change the encryption types to STARTTLS
  11. Click Next
  12. Click Done
  13. You may see a mesage about Outlook being unable to verify the Security Ceritifcate - you will have an opportunity to install the cerificate . (Instructions and the reasons for this are detailed here).

 

Windows Mail

  1. Start Windows Mail, click the Tools menu at the top of the window and then click Accounts.
  2. Select your account under Mail, and then click on the Properties button.
  3. Go to the Advanced tab, under Outgoing server (SMTP), change port 25 to 587.
  4. Click the OK button to save the changes.

Outlook Express

  1. Start Outlook Express, and then select Accounts from the Tools menu at the top of the window.
  2. Double click on your email account.
  3. Under the Advanced tab, change the Outgoing server (SMTP) port 25 to 587.


Thunderbird

  1. Select Tools
  2. Select Outgoing Server (SMTP)
  3. Select the server for this account then Edit
  4. Change the port to 587
  5. Change the Connection Security option to STARTTLS
  6. Change the Authentication Method option to Normal Password
  7. Enter your full email address as the User Name
  8. Select OK
  9. Select OK

Mac Mail

  1. Select Preferences
  2. Select Accounts
  3. 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. Select Save

iPhone

  1. Go to Settings
  2. Select Passwords & Accounts
  3. Select your email account
  4. Select the Account
  5. Under OUTGOING MAIL SERVER select SMTP
  6. Select the server
  7. Update the Server Port to use 587
  8. Select Done
  9. Select Account then Done

Android Mail

  1. Open the Email App
  2. Select Settings
  3. Select Account Settings
  4. Select the account you wish to change
  5. Scroll down to More Settings
  6. Select Outgoing Settings
  7. Change the port to 587 and the Security Settings to STARTTLS
  8. Select Done