Nexulo
commented
7 months ago I was able to solve the problem provisionally by setting it to fetch 10 messages at once. However, I ran imap-backup setup to define an account, because I didn't know how to define the fetch-mail size for a single backup. Would that have worked with --fetch-mail 10?
Originally I backed up using the following command:
imap-backup single backup \
--email mail@example.com \
--password "" \
--connection-options '{"port": 1993, "ssl": false}' \
--server 127.0.0.1 \
--path backup
joeyates
Unfortunately, backups of very large Office 365 "folders" do not work. The folder "Sent items" seems to be over 17GB in size and the backup process aborts every time with the following error logs. Other folders could be backed up without any problems.
The problem is all previously saved mails in this folder are removed because of the crash and the .mbox file contains 0 bytes again. When I start the process again, I do not have to re-authenticate.
So is there any way to solve this problem? Is there a way to cancel the backup process without deleting all previously backed up mails from this folder? This would at least allow me to perform the backup in several steps. I have already tried "ctrl + c", which cancels the script, but unfortunately this also deletes all previously backed up mails from this folder.
Is it even possible to open such a large mbox backup file later to see the mails and attachments?