Your message was sent, but an error occurred during post-processing.

[Chris <cpollock embarqmail com>]

Ubuntu 14.04.1, Gnome 3.12.6. Periodically when sending a message with
Evolution I get this as a pop up:

Your message was sent, but an error occurred during post-processing.
The reported error was "Failed to append to INBOX/Sent: Error appending
message: Stream has outstanding operation
Appending to local 'Sent' folder instead.".

This only seems to happen though when sending from my inbox folder.
Sending from a mailing list folder seems to work fine.

Any ideas?

My mistake, this error also happens with mailing lists.

-- 
Chris
31.11°N 97.89°W (Elev. 1092 ft)
15:29:13 up 1 day, 23:44, 1 user, load average: 0.25, 0.26, 0.26
Ubuntu 14.04 LTS, kernel 3.13.0-37-generic