I suspect this is connected to the latest roundcube modifications; nevertheless, I held off on sending until the issue with reading messages was resolved.
<href>/dav%40ncoulson.com/personal_calendar.230126180111403/</href>
<propstat>
<prop> <resourcetype> <C:calendar/> <collection/> </resourcetype> <displayname>personal</displayname> <CS:getctag>"033aa043db7f0e3e43a1483892a874ced466bc3b6ab07e46b78525318e5c58ba"</CS:getctag> <C:supported-calendar-component-set> <C:comp name="VEVENT"/> <C:comp name="VJOURNAL"/> <C:comp name="VTODO"/> </C:supported-calendar-component-set> <ICAL:calendar-color>#00ff00ff</ICAL:calendar-color> </prop> <status>HTTP/1.1 200 OK</status>
</propstat>
<propstat>
<prop> <ns4:alarms/> </prop> <status>HTTP/1.1 404 Not Found</status>
</propstat>
When I attempt to send an email using the web interface, I keep receiving SMTP authentication issues even though I believed I had saved all of my configuration settings before the upgrade.
Errors.log extracted from roundcube