Error while migrating mailbox with 'doveadm sync'

[Zhang Huangbin]

> On Dec 18, 2016, at 8:26 PM, Zhang Huangbin <zhb at iredmail.org> wrote:
> 
> # doveadm -o mail_fsync=never sync -1 -R -s '' -u user at domain.com imapc:
> dsync(user at domain.com): Panic: file mailbox-alias-plugin.c: line 77 (mailbox_symlink_exists): assertion failed: (ret > 0)
> Abort trap

Checked IMAP folders on old server, this user has ‘.Sent’ and ‘.Sent Messages’ on old server, but ‘.Sent Message’ is configured to be a alias mailbox on new server. After merge 2 folders, then sync works fine.

Sorry about the noise.