Using classic Outlook for Windows in business environments
After months of no issues, starting in Feb we experienced interruption in incoming and outgoing Spectrum emails via "New" Outlook. Most days messages did not arrive; isolated times emails came through. Sending did not work. I could not change the email account settings because of the Microsoft requirement of a system password, which apparently does not exist. Advanced and manual account setup did not work for the same reason. I tried dozens of things, none worked. No consensus as to what caused it. The Spectrum email account we manage with Mozilla Thunderbird has worked fine without interruption, so this issue has to relate to Microsoft/Spectrum. One or the other did something that caused this mess.
My workaround which has worked for the past 3 days was to revert back to Classic Outlook. Once I overrode the IMAP email account settings emails came through and emails could be sent. I used:
IMAP, mail.twc.com, 993, SSL/TLS
SMTP, mail.twc.com, 587, STARTTLS, authentication required
I had to export/import contacts, which was not as straightforward as one would expect with both being Microsoft products.
Our Spectrum email accounts began as a roadrunner account (RR.COM), then Time Warner, then Spectrum. This has not been a satisfactory journey.