I am unable to send any emails via either Thunderbird or Outlook Express, this problem has existed for the last 2 weeks. I have checked all the account settings and they appear ok, and were working ok for many months.
I have both Tiscali and Yahoo email addresses all of which will receive mail on both email clients. I have checked that the email addresses and passwords are correct by logging into all via either click here or click here and can send and receive on each account, I have looked at the anti-virus and firewall programmes and neither appear to be the problem. I have run a virus check and spy ware checks using AVG, ZoneAlarm Spybot and Ad-aware, also have Windows Defender running.