Hallo Up the 4th of October all was ok (see Pix 32), after the 4th I cannot send emails. Error message is Pix 36. Output settings Pix33. Input settings Pix 34. Thunderbird version Pix 40. Zonealarm Pro Version Pix (41).I have a newist laptop with windows 10 Workshop PC Windows 8.1 Pro is set for auto daylight savings adjust and has the correct time. [email protected] is arranged through VentraIP. As shown by Pix 36 all has been ok since The Messaging Co took over from Internode. Laptop I have a newish laptop with windows 10 (fully updated) and with the latest versions of Thunderbird plus Zonealarm. This laptop can recieve but not send as well. I've turned off Zonalarm on both and tested to no avail. Cheers