Expert Tab
Untick use StartTLS when supported by the POP server
The reason is that the incoming server requires implicit TLS 1.2 encryption from the outset
Advanced Tab
Untick for the Outgoing port (SMTP) - Server requires secure connection (TLS)
The reason is that the connection starts insecure and negotiates via the StartTLS command the secure connection with TLS 1.2 encryption
The secure mail settings are good, apart from those changes, so I've requested that full access is restored for the email address mailbox in your Community profile, Personal information, Private notes.
TalkTalk Support will respond here and access returned within a couple of days after that. Until then use TalkTalk Mail webmail via an up to date Internet browser to keep in touch with email contacts.
Prepare for TalkTalk Support - include in the Community Profile (not in these public posts):
Account holder name, TalkTalk home 'phone number (if not Data Only broadband)
Alternative mobile contact number. Full address with postcode (in the Location box)
Scroll down to Private notes to add the email address and account number
Check and Save changes
Select here: Update your profile
You may wish to redact your details from the first two images for your security.
