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dmail - Online in the Cloud

Run dmail in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command dmail that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


dmail - procmail Mail Delivery Module

SYNOPSIS


dmail [-D] [-f from_name] [-s] [-k keyword_list] [user][+folder]

DESCRIPTION


dmail delivers mail to a user's INBOX or a designated folder. dmail may be configured as
a drop-in replacement for binmail(1), mail.local(1) for use with a mail delivery filter
such as procmail(1).

Because of security considerations (see below) dmail is not intended to be used for direct
delivery by the mailer daemon; tmail(1) is the preferred tool for this purpose. If dmail
is used for mailer daemon delivery, the mailer daemon must invoke dmail with the dmail
process' user id set to the recipient's user id.

When dmail exits, it returns exit status values to enable procmail(1) to determine whether
a message was delivered successfully or had a temporary (requeue for later delivery) or
permanent (return to sender) failure.

If the user name is present, it must be the same as the logged-in user name.

If the +folder extension is included in the user argument (or appears by itself if there
is no user argument), dmail will attempt to deliver to the designated folder. If the
folder does not exist or the extension is not included, the message is delivered to the
user's INBOX. If delivery is to INBOX and no INBOX currently exists, dmail will create a
new INBOX. dmail recognizes the format of an existing INBOX or folder, and appends the
new message in that format.

The -D flag specifies debugging; this enables additional message telemetry.

The -f or -r flag is used to specify a Return-Path. The header
Return-Path: <from_name>
is prepended to the message before delivery.

The -s flag specifies that the message will be flagged as being "seen".

The -k flag is used to specify delivery keywords, which are set on the message at delivery
time if and only if the keywords are already defined in the mailbox. Multiple keywords
can be specified by using a quoted string, e.g.,
dmail -k "$Junk Discard" +junkbox

RESTRICTIONS


Absolute pathnames and ~user specifications are not permitted in +folder extensions.

SECURITY CONSIDERATIONS


Unlike tmail you can use dmail to deliver to IMAP4 namespace names via +folder extensions.
This means that it is possible to deliver to mh(1) format mailboxes.

However, this can also include such namespaces as #shared, #public, and #ftp. In most
cases, it is undesirable to allow anybody sending mail to the user to deliver to these
namespaces. Consequently, there needs to be a rule in place in the configuration of
either sendmail(8) or procmail(1) to prevent such abuse.

Use dmail online using onworks.net services


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