I have a SOGo user that is reporting intermittent 503 errors while using SOGo (mainly while clicking between messages), and as recently as this morning is reporting issue uploading multiple attachments. I’m not able to find any errors in the log files for SOGo.
The error message the user is seeing is “Error while uploading the file ‘****.doc’: Failed to change flags of IMAP4 message.”
I have tried replicating these issues both from an administrator account, and a user account we use for diagnostics, neither of which show the same result. I’m wondering if anyone would have any insight on what might be causing this issue, and/or any log files that might be worth checking, as neither Postfix/Dovecot or SOGo logs appear to have any information on the error.
Alternatively, the user did report that they were able to send each file individually and each attachment uploaded and sent fine. It was just when trying to upload multiples.
Many years ago a similar error (but with a more verbose message) was due to missing IMAP Capabilities (UIDPLUS extension) when using an older mail server version, but this should no longer be the case.
Does the error happens only with a specific account?
On an specific computer or any?
On different browsers?
I’m assuming you mean permission-wise? In that case, no. This is a standard user. The only difference between this user and others is that this user is the member of a few specialized groups, but there are multiple others who are part of the same group that do not have this issue.