I use the Thunderbird app in my MacBook and my broadband provider is Talktalk. TT have now changed their email settings and I have spent two days trying to get the correct settings (the ones they provided don't appear to work). To no avail, except, after two days 'chatting', they said to contact Thunderbird. Can anyone provide me with the correct settings please? I have 5 domain names: 2 with TT (the main one, which I have managed to restore, and another), and 3 others (with free-online, gmail and yahoo). I am receiving mail from my 2 TT domain names, from free-online, and gmail but can only send from my main TT domain name. Not from from my other TT nor free-online. I don't know about gmail or yahoo as they're hardly ever used. So, basically it seems that my Incoming settings are fine, but my Outgoing are not, except one. I have gone through so many settings changes I'd like to check from scratch please, I am at my wits' end. I am a senior so perhaps not au fait as much as I could be... Many thanks.