Created attachment 1439 [details] It's a copy from the claws mail network protocol Since any days: If I send a mail from my mail-account by "t-online.de", the send activity is ended with only this error message "*** SSL-Verbindung schlug fehl". The lines in protocol file: > * Konto: 'Carow-Ludwig': Verbinde mit SMTP-Server: securesmtp.t-online.de:465... > *** SSL-Verbindung schlug fehl This malfunction was already in version 3.9.3. I have installed the version 3.10.1 this day. Reading from new mails from "t-online.de" is not a problem. And reading/writing from other mail providers (e.g. "strato.de") have not problems. To send mails over "t-online.de" with other mail software (e.g. MS outlook or the old Eudora) with the same parameters is not a problem. Chris Ludwig Munich, Germany (Please excuse my bad english)
Dear Carow, do you use SSL with your t-online-Account? Please check your Account/SSL-Settings if you use STARTTLS. "Mittels STARTTLS eine SSL-Sitzung einleiten" should be selected there. I had same problems with Posteo because they switched of the SSLv3-support because of the Poodle-Bug.
Created attachment 1440 [details] settings-dialog for SSL
Created attachment 1443 [details] screen-copies
Please compare your screenshot with mine. There are differences. Please modify your settings (POP3) to STARTTLS and try again. If this doesn't work un-check the two Port-checkbockes from your second screenshot. Please feel free to contact me directly in german language over my mail adress.