[kmail2] [Bug 434876] New: Ignore SSL cert errors for IMAP autoconfig

[Philipp Wagner]

https://bugs.kde.org/show_bug.cgi?id=434876

            Bug ID: 434876
           Summary: Ignore SSL cert errors for IMAP autoconfig
           Product: kmail2
           Version: 5.16.3
          Platform: openSUSE RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: mail at philipp-wagner.com
  Target Milestone: ---

Created attachment 137020
  --> https://bugs.kde.org/attachment.cgi?id=137020&action=edit
screenshot of cert failure message

When adding a new IMAP account, kmail tries to connect over HTTPS to
autoconfig.DOMAIN. In my case, this is a domain which doesn't have autoconfig
information, so there's nothing to be found. But the connection attempt
triggers a SSL cert warning in a popup dialog, making the setup procedure quite
unfriendly for new users. (The popup appears multiple times with always one
more "www." added, and the user doesn't really know why this domain is accessed
in the first place).


STEPS TO REPRODUCE (if you want to do it with my server config)
1. Add a new account in kmail.
2. Use anything at philipp-wagner.com as username, and choose a random passwort.
3. See the cert error.

OBSERVED RESULT
see screenshot in attachment (sorry, in German)

EXPECTED RESULT

The cert error should not be shown. I can see reasons to both treat a cert
error as "unable to obtain data from this domain", or to silently ignore cert
errors for this autoconfig stage.


SOFTWARE/OS VERSIONS
Kmail 5.16.3 (20.12.3)
KDE Frameworks 5.80.0
Qt 5.15.2 (kompiliert gegen 5.15.2)
openSUSE Tumbleweed 20210321

ADDITIONAL INFORMATION

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