I've just installed Thunderbird 8 and my three email accounts on my Android phone. One is for my own "xxx.co.uk" business domain, but every time I send an email from that address it bounces back. My host provider has examined the headers generated by Thunderbird and cannot see a problem, and suggested it might be a Thunderbird bug? I've adjusted the initial SMTP settings to match those on my desktops, but no luck. Any ideas?