update -# The Debian value for mbox_write_locks and remove ## Mail attachments

# in is important to avoid deadlocks if other MTAs/MUAs are using multiple

# locking methods as well. Some operating systems don't allow using some of

# them simultaneously.

#

# The Debian value for mbox_write_locks differs from upstream Dovecot. It is

# changed to be compliant with Debian Policy (section 11.6) for NFS safety.

#       Dovecot: mbox_write_locks = dotlock fcntl

#       Debian:  mbox_write_locks = fcntl dotlock

#

#mbox_read_locks = fcntl

#mbox_write_locks = fcntl dotlock

#mbox_write_locks = dotlock fcntl

# Maximum time to wait for lock (all of them) before aborting.

#mbox_lock_timeout = 5 mins

# filesystems (ext4, xfs).

#mdbox_preallocate_space = no

##

## Mail attachments

##

# sdbox and mdbox support saving mail attachments to external files, which

# also allows single instance storage for them. Other backends don't support

# this for now.

# Directory root where to store mail attachments. Disabled, if empty.

#mail_attachment_dir =

# Attachments smaller than this aren't saved externally. It's also possible to

# write a plugin to disable saving specific attachments externally.

#mail_attachment_min_size = 128k

# Filesystem backend to use for saving attachments:

#  posix : No SiS done by Dovecot (but this might help FS's own deduplication)

#  sis posix : SiS with immediate byte-by-byte comparison during saving

#  sis-queue posix : SiS with delayed comparison and deduplication

#mail_attachment_fs = sis posix

# Hash format to use in attachment filenames. You can add any text and

# variables: %{md4}, %{md5}, %{sha1}, %{sha256}, %{sha512}, %{size}.

# Variables can be truncated, e.g. %{sha256:80} returns only first 80 bits

#mail_attachment_hash = %{sha1}

# Settings to control adding $HasAttachment or $HasNoAttachment keywords.

# By default, all MIME parts with Content-Disposition=attachment, or inlines

# with filename parameter are consired attachments.