Icedove can't send mails through Riseup's and Boum's SMTP

sending mails from icedove, with Tails 2.0 beta, using riseup.net or boum.org smtp doesn’t work every time. the client side error say almost nothing (just that the sending failed). claws mail seems not to be affected. it may be a SSL error.

steps to reproduce :

configure icedove to connect the SMTP server with STARTTLS or SSL/TLS port 587 or 465

icedove connect to the server, then, most of the time, an error message popup saying that the sending failed for unknown reason.

Parent Task: #5663 (closed)

Original created by @goupille on 10933 (Redmine)

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