Provided by: dovecot-core_2.4.1+dfsg1-5ubuntu1_amd64 bug

NAME

       dovecot-lda - Dovecot's local mail delivery agent

SYNOPSIS

       dovecot-lda  [-ek]  [-a  address]  [-c  config_file]  [-d username] [-f envelope_sender] [-m mailbox] [-o
       setting=value] [-p path] [-r address]

DESCRIPTION

       The dovecot-lda is a local mail delivery agent which takes mail from an MTA and delivers it to  a  user's
       mailbox, while keeping Dovecot index files up to date.

       Main features of the dovecot-lda are:

       •   Mailbox indexing during mail delivery, providing faster mailbox access later

       •   Quota enforcing by the quota plugin

       •   Sieve language support by the Pigeonhole sieve plugin

OPTIONS

       Options accepted by dovecot-lda:

       -a address

           Destination   address   (e.g.   user+ext@domain).   If   not  specified,  default  is  based  on  the
           lda_original_recipient_header setting setting.

       -c config_file

           Alternative configuration file path.

       -d username

           Destination username. If given, the user information is looked up from userdb.  Typically  used  with
           virtual users, but not necessarily with system users.

       -e

           If  mail gets rejected, write the rejection reason to stderr and exit with status 77 (EX_NOPERM). The
           default is to send a rejection mail ourself.

       -f envelope_sender

           Envelope sender address. If not specified and message data begins with a  valid  mbox-style  "From  "
           line, the address is taken from it.

       -k

           Don't clear all environment at startup.

       -m mailbox

           ). If the mailbox doesn't exist, it will not be created (unless lda_mailbox_autocreate setting). If a
           message couldn't be saved to the

               •   If Sieve plugin is used, this mailbox is used as the keep action's mailbox. It's also used if
                   there is no Sieve script or if the script fails for some reason.

               •   Deliveries  to  namespace prefix will result in saving the mail to INBOX instead. For example
                   if you have Mail/ namespace, this allows you to specify dovecot-lda  -m  Mail/$mailbox  where
                   mail is stored to Mail/$mailbox or to INBOX if $mailbox is empty.

               •
                    directory,  your namespace configuration is namespace_prefix setting and namespace_separator
                   setting, the correct way to deliver mail there is to use

       -o setting=value

           Overrides the configuration setting from /etc/dovecot/dovecot.conf and from the userdb with the given
           value. In order to override multiple settings, the -o option may be specified multiple times.

       -p path

           Path to the mail to be delivered instead of reading from stdin. If using maildir  the  file  is  hard
           linked  to  the  destination if possible. This allows a single mail to be delivered to multiple users
           using hard links, but currently it also prevents deliver from updating cache file so it shouldn't  be
           used unless really necessary.

       -r address

           Final  envelope  recipient address. Defaults to -a address, but may differ if, e.g., aliases are used
           or when dropping the +detail part.

EXIT STATUS

       dovecot-lda will exit with one of the following values:

       0

           Delivery was successful. (EX_OK)

       64

           Invalid parameter given. (EX_USAGE)

       67

           Recipient user not known. (EX_NOUSER)

       77

           -e option was used and mail was rejected.  Typically  this  happens  when  user  is  over  quota  and
           quota_full_tempfail = no is configured. (EX_NOPERM)

       75

           A  temporary  failure.  This  is  returned  for  almost  all  failures. See the log file for details.
           (EX_TEMPFAIL)

FILES

       /etc/dovecot/dovecot.conf

           Dovecot's main configuration file.

       /etc/dovecot/conf.d/10-mail.conf

           Mailbox locations and namespaces.

       /etc/dovecot/conf.d/15-lda.conf

           LDA specific settings.

       /etc/dovecot/conf.d/90-plugin.conf

           Plugin specific settings.

       /etc/dovecot/conf.d/90-quota.conf

           Quota configuration.

REPORTING BUGS

       Report bugs, including doveconf -n output, to the Dovecot Mailing List dovecot@dovecot.org. Information
       about reporting bugs is available at: https://dovecot.org/bugreport.html

SEE ALSO

       doveadm(1)

       Related MTA specific documentation:

       •   Postfix:

           •   postconf(5), transport(5), pipe(8)

       •   Exim:

           •   https://exim.org/exim-html-current/doc/html/spec_html/ch16.html

           •   https://exim.org/exim-html-current/doc/html/spec_html/ch24.html

           •   https://exim.org/exim-html-current/doc/html/spec_html/ch29.html

78ffb79                                            March 2025                                     DOVECOT-LDA(1)