sender_email - endereço de e-mail que não existe, mas deve ser usado como endereço FROM, porque o host do destinatário rejeita e-mails de outros e-mails.
receiver_email - e-mail que deve receber a mensagem enviada
local_smtp - servidor SMTP instalado em outro computador na rede local e encaminha todas as mensagens recebidas para external_smtp
external_smtp - servidor SMTP que está instalado em um computador em outra rede e rejeita todos os emails que não são provenientes de sender_email
Configurei o sendmail para enviar e-mails de sender_email e autenticar com usuário / senha para local_smtp , que deveria enviar a mensagem de e-mail para external_smtp , que só aceita e-mails enviados de um e-mail específico, que é sender_email neste caso. No entanto, a julgar pelos arquivos de log, o sendmail autentica com external_smtp em vez de local_smtp . Eu não quero autenticar com external_smtp , porque isso é até local_smtp .
logfile :
10745 <<< Subject: Terminal Email Send
10745 <<<
10745 <<< Email Content line 1
10745 <<< Email Content line 2
10745 <<< [EOF]
10759 === CONNECT local_smtp.
10759 <<< 220 **********************************************************************^M
10759 >>> EHLO mgmt-snmp
10759 <<< 250-local_smtp says hello^M
10759 <<< 250-AUTH LOGIN PLAIN^M
10759 <<< 250-VRFY^M
10759 <<< 250 8BITMIME^M
10759 >>> MAIL From:<sender_email> AUTH=sender_email
10759 <<< 530 authentication required^M
10759 >>> This is a MIME-encapsulated message
10759 >>>
10759 >>> --t8IEdmbX010759.1442587188/mgmt-snmp
10759 >>>
10759 >>> The original message was received at Fri, 18 Sep 2015 16:39:48 +0200
10759 >>> from root@localhost
10759 >>>
10759 >>> ----- The following addresses had permanent fatal errors -----
10759 >>> receiver_email
10759 >>> (reason: 530 authentication required)
10759 >>>
Acho que tem algo a ver com AUTH=sender_email , mas não sei como alterá-lo.
sendmail.mc :
divert(-1)dnl
#-----------------------------------------------------------------------------
# $Sendmail: debproto.mc,v 8.14.4 2014-02-11 13:02:08 cowboy Exp $
#
# Copyright (c) 1998-2010 Richard Nelson. All Rights Reserved.
#
# cf/debian/sendmail.mc. Generated from sendmail.mc.in by configure.
#
# sendmail.mc prototype config file for building Sendmail 8.14.4
#
# Note: the .in file supports 8.7.6 - 9.0.0, but the generated
# file is customized to the version noted above.
#
# This file is used to configure Sendmail for use with Debian systems.
#
# If you modify this file, you will have to regenerate /etc/mail/sendmail.cf
# by running this file through the m4 preprocessor via one of the following:
# * make (or make -C /etc/mail)
# * sendmailconfig
# * m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
# The first two options are preferred as they will also update other files
# that depend upon the contents of this file.
#
# The best documentation for this .mc file is:
# /usr/share/doc/sendmail-doc/cf.README.gz
#
#-----------------------------------------------------------------------------
divert(0)dnl
#
# Copyright (c) 1998-2005 Richard Nelson. All Rights Reserved.
#
# This file is used to configure Sendmail for use with Debian systems.
#
define('_USE_ETC_MAIL_')dnl
include('/usr/share/sendmail/cf/m4/cf.m4')dnl
VERSIONID('$Id: sendmail.mc, v 8.14.4-4.1ubuntu1 2014-02-11 13:02:08 cowboy Exp $')
OSTYPE('debian')dnl
DOMAIN('debian-mta')dnl
dnl # Items controlled by /etc/mail/sendmail.conf - DO NOT TOUCH HERE
undefine('confHOST_STATUS_DIRECTORY')dnl #DAEMON_HOSTSTATS=
dnl # Items controlled by /etc/mail/sendmail.conf - DO NOT TOUCH HERE
dnl #
dnl # General defines
dnl #
dnl # SAFE_FILE_ENV: [undefined] If set, sendmail will do a chroot()
dnl # into this directory before writing files.
dnl # If *all* your user accounts are under /home then use that
dnl # instead - it will prevent any writes outside of /home !
dnl # define('confSAFE_FILE_ENV', '')dnl
dnl #
dnl # Daemon options - restrict to servicing LOCALHOST ONLY !!!
dnl # Remove ', Addr=' clauses to receive from any interface
dnl # If you want to support IPv6, switch the commented/uncommentd lines
dnl #
FEATURE('no_default_msa')dnl
dnl DAEMON_OPTIONS('Family=inet6, Name=MTA-v6, Port=smtp, Addr=::1')dnl
DAEMON_OPTIONS('Family=inet, Name=MTA-v4, Port=smtp')dnl
dnl DAEMON_OPTIONS('Family=inet6, Name=MSP-v6, Port=submission, M=Ea, Addr=::1')dnl
DAEMON_OPTIONS('Family=inet, Name=MSP-v4, Port=submission, M=Ea, Addr=127.0.0.1')dnl
dnl #
dnl # Be somewhat anal in what we allow
define('confPRIVACY_FLAGS',dnl
'needmailhelo,needexpnhelo,needvrfyhelo,restrictqrun,restrictexpand,nobodyreturn,authwarnings')dnl
dnl #
dnl # Define connection throttling and window length
define('confCONNECTION_RATE_THROTTLE', '15')dnl
define('confCONNECTION_RATE_WINDOW_SIZE','10m')dnl
dnl #
dnl # Features
dnl #
dnl # use /etc/mail/local-host-names
FEATURE('use_cw_file')dnl
dnl #
dnl # The access db is the basis for most of sendmail's checking
FEATURE('access_db', , 'skip')dnl
dnl #
dnl # The greet_pause feature stops some automail bots - but check the
dnl # provided access db for details on excluding localhosts...
FEATURE('greet_pause', '1000')dnl 1 seconds
dnl #
dnl # Delay_checks allows sender<->recipient checking
FEATURE('delay_checks', 'friend', 'n')dnl
dnl #
dnl # If we get too many bad recipients, slow things down...
define('confBAD_RCPT_THROTTLE','3')dnl
dnl #
dnl # Stop connections that overflow our concurrent and time connection rates
FEATURE('conncontrol', 'nodelay', 'terminate')dnl
FEATURE('ratecontrol', 'nodelay', 'terminate')dnl
dnl #
dnl # If you're on a dialup link, you should enable this - so sendmail
dnl # will not bring up the link (it will queue mail for later)
dnl define('confCON_EXPENSIVE','True')dnl
dnl #
dnl # Dialup/LAN connection overrides
dnl #
include('/etc/mail/m4/dialup.m4')dnl
include('/etc/mail/m4/provider.m4')dnl
dnl LOCAL_CONFIG
dnl EXPOSED_USER(root uucp)dnl # users exempt from masquerading
dnl LOCAL_USER(root)dnl
dnl MASQUERADE_AS('external_smtp')dnl
dnl FEATURE('allmasquerade')dnl
dnl FEATURE('masquerade_envelope')dnl
dnl FEATURE('nullclient', local_smtp)dnl
LOCAL_CONFIG
## Custom configurations below (will be preserved)
define('SMART_HOST', 'local_smtp')dnl
define('confAUTH_MECHANISMS', 'EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
FEATURE('authinfo', 'hash /etc/mail/authinfo')dnl
define('RELAY_MAILER_ARGS', 'TCP $h 25')dnl
dnl #
dnl # Default Mailer setup
MAILER_DEFINITIONS
MAILER('local')dnl
MAILER('smtp')dnl
authinfo :
AuthInfo:local_smtp "U:root" "I:my_username" "P:my_password"
Como root, envie uma mensagem de teste com pesquisas de mapa de rastreamento (authinfo).
#!/bin/sh
# -d60.5 turn on traking map lookups
/usr/sbin/sendmail -d60.5 -v -i -fsender_email -- receiver_email <<END
subject: test
test
END
Resultados possíveis para definir os próximos testes:
Tags authentication email sendmail smtp