I have fixed the PST issue.
I can now connect to her email using Outlook and it was 993 thank-you
BUT my sister when I test it her login works but the test message is not sent.
Both my sister and I have windows 10/64 bit running office 365 Outlook.
I have got her doing a full repair on Office...
I am helping my sister who hooks up to her website to get Imap mail
The connection works on Thunderbird but not on outlook
I can connect to a reseller hosted domain IMAP account using Thunderbird but NOT with Outlook and my older sister wants to use Outlook.
Using Windows 10 and Outlook 365