Hi there, We have been using Mozilla Thunderbird for a very long time now and on the 2nd December 2016 one of our computers where receiving emails fine, and all of a sudden we cannot receive emails or send emails. We have 5 work stations and 4/5 are working fine sending and receiving. I have also checked our hosting company and they said everything is sending fine. I have also checked our mobile phones and they are sending to them also. So I am a little lost as I have re-installed Thunderbird on the machine that it is not working and yet I cannot send or receive emails. Can you please assist as it is quite important we have emails being sent and received. Thank you