I use a web client that is part of another program.
Up until about a week ago it was working fine now I can't upload emails.
The support engineer says the problem is related to the TLS protocol.
As per the standard advice I'm configured to upload to smtp.office365.com via port 587.
Are there other ports I could use?
Can I turn TLS off?
No I havent installed any other programs this last week.
I'm puzzled anyone got a guess?
