Mail::Transport::Sendmail(3)

NAME
Mail::Transport::Sendmail - transmit messages using external Sendmail program

INHERITANCE
 Mail::Transport::Sendmail
   is a Mail::Transport::Send
   is a Mail::Transport
   is a Mail::Reporter

SYNOPSIS
 my $sender = Mail::Transport::Sendmail->new(...);
 $sender->send($message);

DESCRIPTION
Implements mail transport using the external 'Sendmail' program. When instantiated, the mailer will look for the binary in specific system directories, and the first version found is taken.

Some people use Postfix as MTA. Postfix can be installed as replacement for Sendmail: is provides a program with the same name and options. So, this module supports postfix as well.

WARNING: When you do bulk email sending with local delivery via Postfix, you can probably better use the SMTP backend to connect to postfix. The "sendmail" command delivers to "maildrop". From "maildrop", the "pickupd" will only sequentially insert messages into "cleanup". That process can take considerable elapse time. Directly inserting via "smtpd" will parallellize the cleanup process.

Extends "DESCRIPTION" in Mail::Transport::Send.

METHODS
Extends "METHODS" in Mail::Transport::Send.

  Constructors
Extends "Constructors" in Mail::Transport::Send.

Mail::Transport::Sendmail->new(%options)
     -Option          --Defined in     --Default
      executable        Mail::Transport  undef
      hostname          Mail::Transport  'localhost'
      interval          Mail::Transport  30
      log               Mail::Reporter   'WARNINGS'
      password          Mail::Transport  undef
      port              Mail::Transport  undef
      proxy             Mail::Transport  undef
      retry             Mail::Transport  <false>
      sendmail_options                   []
      timeout           Mail::Transport  120
      trace             Mail::Reporter   'WARNINGS'
      username          Mail::Transport  undef
      via               Mail::Transport  'sendmail'

    executable => FILENAME
    hostname => HOSTNAME|ARRAY
    interval => SECONDS
    log => LEVEL
    password => STRING
    port => INTEGER
    proxy => PATH
    retry => NUMBER|undef
    sendmail_options => ARRAY
        Add to the command-line of the started sendmail MTU a list of separate words. So say " [ '-f', $file ] " and not " [ "-f $file" ] ", because the latter will be taken by sendmail as one word only.

    timeout => SECONDS
    trace => LEVEL
    username => STRING
    via => CLASS|NAME

  Attributes
Extends "Attributes" in Mail::Transport::Send.

$obj->logSettings()
    Inherited, see "Attributes" in Mail::Reporter

  Sending mail
Extends "Sending mail" in Mail::Transport::Send.

$obj->destinations( $message, [$address|ARRAY] )
    Inherited, see "Sending mail" in Mail::Transport::Send

$obj->putContent($message, $fh, %options)
    Inherited, see "Sending mail" in Mail::Transport::Send

$obj->send($message, %options)
    Inherited, see "Sending mail" in Mail::Transport::Send

$obj->trySend($message, %options)
     -Option          --Default
      sendmail_options  undef

    sendmail_options => ARRAY

  Server connection
Extends "Server connection" in Mail::Transport::Send.

$obj->findBinary( $name, [@directories] )
    Inherited, see "Server connection" in Mail::Transport

$obj->remoteHost()
    Inherited, see "Server connection" in Mail::Transport

$obj->retry()
    Inherited, see "Server connection" in Mail::Transport

  Error handling
Extends "Error handling" in Mail::Transport::Send.

$obj->AUTOLOAD()
    Inherited, see "Error handling" in Mail::Reporter

$obj->addReport($object)
    Inherited, see "Error handling" in Mail::Reporter

$obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
Mail::Transport::Sendmail->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->errors()
    Inherited, see "Error handling" in Mail::Reporter

$obj->log( [$level, [$strings]] )
Mail::Transport::Sendmail->log( [$level, [$strings]] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->logPriority($level)
Mail::Transport::Sendmail->logPriority($level)
    Inherited, see "Error handling" in Mail::Reporter

$obj->notImplemented()
    Inherited, see "Error handling" in Mail::Reporter

$obj->report( [$level] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->reportAll( [$level] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->trace( [$level] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->warnings()
    Inherited, see "Error handling" in Mail::Reporter

  Cleanup
Extends "Cleanup" in Mail::Transport::Send.

$obj->DESTROY()
    Inherited, see "Cleanup" in Mail::Reporter

  Server connection
Extends "Server connection" in Mail::Transport::Send.

DIAGNOSTICS

Error: Errors when closing sendmail mailer $program: $!
    The was no problem starting the sendmail mail transfer agent, but for some specific reason the message could not be handled correctly.

Warning: Message has no destination
    It was not possible to figure-out where the message is intended to go to.

Error: Package $package does not implement $method.
    Fatal error: the specific package (or one of its superclasses) does not implement this method where it should. This message means that some other related classes do implement this method however the class at hand does not. Probably you should investigate this and probably inform the author of the package.

Warning: Resent group does not specify a destination
    The message which is sent is the result of a bounce (for instance created with Mail::Message::bounce()), and therefore starts with a "Received" header field. With the "bounce", the new destination(s) of the message are given, which should be included as "Resent-To", "Resent-Cc", and "Resent-Bcc".

    The "To", "Cc", and "Bcc" header information is only used if no "Received" was found. That seems to be the best explanation of the RFC.

    As alternative, you may also specify the "to" option to some of the senders (for instance Mail::Transport::SMTP::send(to) to overrule any information found in the message itself about the destination.

SEE ALSO
This module is part of Mail-Transport distribution version 3.007, built on September 03, 2025. Website: http://perl.overmeer.net/CPAN/

LICENSE
Copyrights 2001-2025 by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://dev.perl.org/licenses/