Enabling Secure Connections in Thunderbird 3-4
These versions of Thunderbird are not supported anymore, this article is for legacy purpose.
1- Open the Thunderbird application.
2- From the menu options, go to Tools->Account Settings.
3- Find the account labelled with your HIS-hosted email address on the left side panel and click on Server Settings.
4- Under Server Settings, look for the Security Settings section and change the following:
Click the pull down menu for SSL/TLS)
5- DO NOT check "Use secure authentication". Our servers do not support that.
6- The Port number should automatically have been changed to "993" for IMAP. (Note: If you are using POP instead it will automatically change to 995 . Check this to confirm you made the correct setting change.
7- Click OK to close the dialog.
8- In the white menu on the left, select the entry Outgoing Server (SMTP). The Outgoing Server (SMTP) Settings appear on the right. Select the server name for your HIS-hosted account.
Change the Port from 25 to 587 or 465.
Verify that the Use name and password box is checked. Click on the box to check it, if it is not checked.
Make sure username is your full email address, and leave your password as is.
9- Click OK