This bug was fixed in the package evolution-data-server - 3.12.11-0ubuntu1.15.04.1
--------------- evolution-data-server (3.12.11-0ubuntu1.15.04.1) vivid; urgency=medium
* Add patch for GNOME bug #749292 (SMTP connection lost while reading message data) (LP: #1442756)
-- Iain Lane <email address hidden> Thu, 17 Sep 2015 11:06:16 +0100
This bug was fixed in the package evolution- data-server - 3.12.11- 0ubuntu1. 15.04.1
--------------- data-server (3.12.11- 0ubuntu1. 15.04.1) vivid; urgency=medium
evolution-
* Add patch for GNOME bug #749292 (SMTP connection lost while reading
message data) (LP: #1442756)
-- Iain Lane <email address hidden> Thu, 17 Sep 2015 11:06:16 +0100