Problem with Dovecot Maildir.
The button “Download folders in zip archive” does not work in the web interface if the folder containing mail files, for example:
1576228020.M502546P40049.post.sigma.com.ua,S=1229,W=1255:2,
In urbackup.log:
2020-01-24 15:04:19: ERROR: Error while adding file “/backup/urbackup/post.sigma.com.ua/2001222309/vmail/dar.org.ua/admin/cur/1576228020.M502546P40049.post.sigma.com.ua,S=1229,W=1255:2,” to ZIP file. Error: invalid filename. OS error: Code 0
If the mail file does not occur with a similar name, everything works.
I suspect that when archiving file names are incorrectly escaped, but where to fix this is not clear
I use FreeBSD 12.1 and UrbackupServer 2.4.11