Bug 1317700

Summary:	Evolution: Repeated Multiple Error Messages
Product:	[Fedora] Fedora	Reporter:	buzzrobot
Component:	evolution	Assignee:	Milan Crha <mcrha>
Status:	CLOSED UPSTREAM	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	23	CC:	lucilanga, mbarnes, mcrha, tpopela
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-03-15 10:39:00 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description buzzrobot 2016-03-14 22:40:20 UTC

Description of problem: 

Evolution consistently displays a variety of error messages when an outlook.com IMAP account is check for new mail.

These messages include:

Failed to refresh folder "#######@outlook.com : INBOX".
The reported error was "Error running STATUS: TLS connection closed unexpectedly".

Error while performing operation.
Error fetching folders: TLS connection closed unexpectedly

Failed to refresh folder "#######@outlook.com : INBOX".
The reported error was "Error performing NOOP: TLS connection closed unexpectedly".

The account was created via Evolution's setup wizard and is correctly configured.

Version-Release number of selected component (if applicable):

Fedora 23, Gnome 3,18,2, Evolution 3.18.5.1

How reproducible:

Rare for it *not* to happen.

Steps to Reproduce:
1. Create outlook.com IMAP accout
2. Tell Evolution to check for new mail or wait for regular refresh


Actual results:

Error messages

Expected results:

No errors

Additional info:

This is not new behavior.

Comment 1 Milan Crha 2016-03-15 10:11:52 UTC

Thanks for a bug report. The "TLS connection closed unexpectedly" means that the server disconnected when it was not expected by the glib's gio library (respectively gnutls). Why it is so with the outlook.com server I do not know. The reason why this error isn't silently ignored and the operation which failed restarted is that the documentation for this error [1] says:

   G_TLS_ERROR_EOF - The TLS connection was closed without proper notice,
   which may indicate an attack.

That the error can also mean it's an attack, thus I decided to not hide it. Weird that it's mainly shown with the outlook.com site, which I guess is an indication that the server does something oddly.

I can add this error to the set of errors being ignored, for 3.20.1 of the evolution-data-server.

[1] https://developer.gnome.org/gio/2.46/gio-TLS-Overview.html#G-TLS-ERROR-EOF:CAPS

Comment 2 Milan Crha 2016-03-15 10:39:00 UTC

I moved this upstream for better visibility. Please see [1] for any further updates.

[1] https://bugzilla.gnome.org/show_bug.cgi?id=763670