I used to use Tiscali, but I have my own domain now so don't use ISP email anymore.
I was trying to send an email to Lineone.net address, but it was rejected (Recipient Suspended (TT514) error).
The TalkTalk forum seems to be full of Email problems: https://community.talktalk.co.uk/t5/Email-Webmail/bd-p/myemail
I suppose no-one here at KF still use Lineone, but thought I'll mention this
I haven't use mine for about a decade but thanks.
My lineone account is still active but rarely used. I still log in to check it. A friend found out recently that none of their tiscali sent emails actually got anywhere since last October.