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       esmtprc - esmtp configuration file.


       A  esmtp  configuration  file consists of several options.  The options
       format is:


       The equal sign is optional and can  be  replaced  by  whitespace.   The
       value may be enclosed in simple or double quotes, in which case special
       characters can be escaped as in normal C strings.

       Comments  are  delimited  by  the  ’#’  character  up  to  the  newline


              Set SMTP host and service (port).

              The format is:


              With   no   whitespace  surrounding  the  colon  if  service  is
              specified. service may be a name from /etc/services or a decimal
              port number.  If not specified the port defaults to 587.

              Note  (from  libESMTP documentation): the default port number is
              set to 587 since this is the port that should be used  for  mail
              submission, see RFC 2476.  By choosing this default now, the API
              does not change behavior unexpectedly in the future  as  use  of
              the  new  standard  becomes commonplace.  The host-port notation
              simplifies  things  for  the  application,  the  user  can  type
              "localhost:smtp" or "localhost:25" where the application expects
              a host name.

              Set the username for authentication with the SMTP server.

              Do NOT set the username and password in the system configuration
              file unless you are the only user of this machine.  Esmtp is not
              run with suid privileges therefore the system configuration file
              must  be  readable  by  everyone.   If your SMTP server requires
              authentication and you are not the only user then  specify  your
              personal SMTP account details in the user configuration file.

              Set the password for authentication with the SMTP server.

              Whether to use the StartTLS extension.

              It  can  be one of enabled, disabled or required. It defaults to

              Set the certificate passphrase for the StartTLS extension.

       helo   Set the hostname to  identify  as  when  sending  HELO  or  EHLO
              commands.   (This  is a per identity option, as it should be the
              name you are seen as from the connected  host,  which  may  vary
              with host to host due to NAT or different naming schemes).

              Make  all  local  addresses  to remote ones by adding @ and this

       force sender
              Set a "Sender:" header and ignore those  in  the  message.  "%u"
              will be replaced with the username. "%%" by "%".

       force reverse_path
              Set the envelope from address. The address given to -f will only
              be used as "From:" when the message contains none. "%u" will  be
              replaced with the username. "%%" by "%".

              Whether  to  set  the  Message-ID  field  of  the message before
              sending.  Normally the receiving  MTA  sets  the  Message-ID  if
              missing,  so you can turn this off if your sending host does not
              have a fully qualified domain name.

              Allowed values are either enabled or disabled.  It  defaults  to

              Shell command to execute prior to opening an SMTP connection.

              This   may  be  useful  in  conjunction  with  application-level
              transports (e.g.  ssh with its port-forwarding functionality) to
              secure  the  SMTP connection. Esmtp will wait for the command to
              exit before proceeding.   If  the  command  returns  a  non-zero
              status, delivery will be aborted.

              Define an identity.

              An identity is a set of options associated with a given address.
              For example:

                  identity =
                      hostname =
                      username = "myself"
                      password = "secret"

              Identities are be selected by the address specified  in  the  -f
              flag.  You can have as many you like.

              The  options  in  the  global  section (up to the first identity
              option) constitute the default identity. If no  options  in  the
              global  section  are  given  then  the first defined identity is
              taken as the default one.

              Note that the default identity settings are not  shared  by  the
              other identities.  Everything (username, password, etc.) must be
              specified for every identity even if they don’t differ from  the
              default identity.

       mda    Set the Mail Delivery Agent (MDA).

              Esmtp relies upon a MDA for local mail delivery, i.e., addresses
              without a ’@’ character.  A non-zero error  status  tells  esmtp
              that delivery failed.

              The  local  delivery  addresses  will  be  inserted into the MDA
              command wherever you  place  a  %T.   The  mail  message’s  From
              address will be inserted where you place an %F.

              Some    common    MDAs    are    "/usr/bin/procmail    -d   %T",
              "/usr/bin/deliver" and "/usr/lib/mail.local %T".

              Force mail to be delivered by the MDA.

              When set, any mail from anywhere to  anywhere  will  instead  be
              delivered  to  the  value  of  force_mda.  It  will also only be
              delivered locally, via the mda. This will let you  have  a  very
              minimal mail set-up, which can ONLY handle local mail.

              For example:

                  mda = "procmail -d %T"
                  force_mda = "someuser"




       José Fonseca