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google-email.sh.txt
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#!/bin/bash
#GOOGLE => ALLOW LESS SECURE APP ON ===> https://myaccount.google.com/u/1/lesssecureapps?pli=1
#apt install sendemail
SERVER=smtp.gmail.com:587
SUBJECT="Test E-mail"
BODY="This is the body of text"
PASS=ENTERYOURPASSWORD
sendEmail -f $FROM -t $TO -u $SUBJECT -m $BODY -s $SERVER -xu $USER -xp $PASS
################################################################################################################################
# Postfix
1. ss -ntl
2. postalias /etc/aliases
3. postconf -n
4. postconf -p message_size_limit
5. postconf -e 'mailbox_size_limit=20480000'
# Local Mail delivery & Verify Activity in Mail Logs
6. apt install s-nail ---> is mailx
7. mailx -s test smtp-user
testing
.
mailx
1
q
8. tail /var/log/mail.log ---> see status ---> sent or bounced
9. useradd smtp-user
_____________________________________________________________________
1. ls /var/spool/postfix
2. postqueue -p
3. s-nail -s "Testing by Asim" "[email protected]"
the body
.
postqueue -p
4. grep hosts /etc/nsswitch.conf ---> for local
---------------------------------------------------------------------------
# tls
openssl s_client -connect mail-server.bridgeway-eng.com:25 -starttls smtp
ss -ntl
openssl s_client -connect mail-server.bridgeway-eng.com:465
_______________________________R&D_______________________________________________
# dovecot
# apt install -y mail-stack-delivery
postconf -p home_mailbox
postconf -p mailbox_command
cd /etc/dovecot
cd /etc/dovecot/conf.d
cp 10-mail.conf 10-mail.conf-backup
vim 10-mail.conf
/privileged
systemctl restart dovecot
systemctl status dovecot
ss -ntl
# Making home directory for an existing user
mkhomedir_helper smtp-user
s-nail -s test smtp-user
body
.
usermod -aG sudo smtp-user
sudo tail /var/log/mail.log
sudo apt install s-nail
##################################### mutt ###################################################
yum -y install cyrus-sasl-plain ----> must install with mutt
set folder="imap://[email protected]"
set spoolfile="imap://[email protected]/INBOX"
set smtp_url = "smtps://[email protected]:465/"
set from = "[email protected]"
set realname = "Muhammad Asim Arain"
########################################## main.cf ################################################################
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtpd_tls_cert_file = /etc/dovecot/dovecot.pem
smtpd_tls_key_file = /etc/dovecot/private/dovecot.pem
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_sender_restrictions = permit_sasl_authenticated
myhostname = mitratech.com
mydomain = local.server
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
# myorigin = /etc/mailname
relay_domains = youdomain1.com, yourdomain2.com, yourdomain3.com, yourdomain4.com, yourdomain5.com
local_recipient_maps =
# mydestination = mail.youdomain1.com, ip-10-2-0-500.youdomain1.com, localhost.yourdomain3.com, localhost
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 10.2.0.0/24
mailbox_size_limit = 0
recipient_delimiter = +
# inet_interfaces = loopback-only
home_mailbox = Maildir/
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/dovecot-auth
smtpd_sasl_authenticated_header = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sender_restrictions = reject_unknown_sender_domain
mailbox_command = /usr/lib/dovecot/deliver -c /etc/dovecot/dovecot.conf -m "${EXTENSION}"
smtp_use_tls = yes
smtpd_tls_received_header = yes
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_auth_only = no
tls_random_source = dev:/dev/urandom
############################################################# master.cf ##########################################################
#
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: http://www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (no) (never) (100)
# ==========================================================================
smtp inet n - y - - smtpd
#smtp inet n - y - 1 postscreen
smtpd pass - - y - - smtpd
#dnsblog unix - - y - 0 dnsblog
#tlsproxy unix - - y - 0 tlsproxy
#submission inet n - y - - smtpd
# -o syslog_name=postfix/submission
# -o smtpd_tls_security_level=encrypt
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
smtps inet n - y - - smtpd
-o syslog_name=postfix/smtps
-o smtpd_tls_wrappermode=yes
-o smtpd_sasl_auth_enable=yes
-o smtpd_reject_unlisted_recipient=no
-o smtpd_client_restrictions=$mua_client_restrictions
-o smtpd_helo_restrictions=$mua_helo_restrictions
-o smtpd_sender_restrictions=$mua_sender_restrictions
-o smtpd_recipient_restrictions=
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
-o milter_macro_daemon_name=ORIGINATING
#628 inet n - y - - qmqpd
pickup unix n - y 60 1 pickup
cleanup unix n - y - 0 cleanup
qmgr unix n - n 300 1 qmgr
#qmgr unix n - n 300 1 oqmgr
tlsmgr unix - - y 1000? 1 tlsmgr
rewrite unix - - y - - trivial-rewrite
bounce unix - - y - 0 bounce
defer unix - - y - 0 bounce
trace unix - - y - 0 bounce
verify unix - - y - 1 verify
flush unix n - y 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - y - - smtp
relay unix - - y - - smtp
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - y - - showq
error unix - - y - - error
retry unix - - y - - error
discard unix - - y - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - y - - lmtp
anvil unix - - y - 1 anvil
scache unix - - y - 1 scache
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
####################################################################################################################
# https://www.ndchost.com/wiki/mail/test-smtp-auth-telnet
# https://bobcares.com/blog/postfix-authentication-not-enabled/
# https://www.garron.me/en/go2linux/send-mail-gmail-mutt.html
# https://github.com/LukeSmithxyz/mutt-wizard/issues/28 ---> package for mutt