dovecot-lda1

Usage

dovecot-lda - Dovecot's local mail delivery agent

Overview

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:

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

Destination mailbox (default is INBOX). 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 mailbox for any reason, it's delivered to INBOX instead.

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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.

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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.

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The mailbox name is specified the same as it's visible in IMAP client. For example if you've a Maildir with .box.sub/ directory, your namespace configuration is namespace_prefix setting and namespace_separator setting, the correct way to deliver mail there is to use -m INBOX/box/sub

-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

64

67

77

75

Files

/etc/dovecot/dovecot.conf

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

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

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

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