mirror of
https://github.com/imthenachoman/How-To-Secure-A-Linux-Server.git
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78
README.md
78
README.md
@@ -54,6 +54,7 @@ An evolving how-to guide for securing a Linux server that, hopefully, also teach
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- [OSSEC - Host Intrusion Detection](#ossec---host-intrusion-detection)
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- [The Danger Zone](#the-danger-zone)
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- [The Miscellaneous](#the-miscellaneous)
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- [MSMTP (Simple Sendmail) with google](#msmtp-alternative)
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- [Gmail and Exim4 As MTA With Implicit TLS](#gmail-and-exim4-as-mta-with-implicit-tls)
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- [Separate iptables Log File](#separate-iptables-log-file)
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- [Left Over](#left-over)
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@@ -3084,6 +3085,83 @@ Keep in mind, deborphan finds packages that have **no package dependencies**. Th
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## The Miscellaneous
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### The Simple way with MSMTP
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(#msmtp-alternative)
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#### Why
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Well I will SIMPLIFY this method, to only output email using google mail account (and others). True Simple! :)
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``` bash
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#!/bin/bash
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###### PLEASE .... EDIT IT...
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USRMAIL="usernameemail"
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DOMPROV="gmail.com"
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PWDEMAIL="passwordStrong" ## ATTENTION DONT USE Special Chars.. like as SPACE # and some others not all. Feel free to test ;)
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MAILPROV="smtp.google.com:583"
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MYMAIL="$USRMAIL@$DOMPROV"
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USERLOC="root"
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#######
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apt install -y msmtp
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ln -s /usr/bin/msmtp /usr/sbin/sendmail
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#wget http://www.cacert.org/revoke.crl -O /etc/ssl/certs/revoke.crl
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#chmod 644 /etc/ssl/certs/revoke.crl
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touch /root/.msmtprc
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cat <<EOF> .msmtprc
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defaults
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account gmail
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host $MAILPROV
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port $MAILPORT
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#proxy_host 127.0.0.1
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#proxy_port 9001
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from $MYEMAIL
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timeout off
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protocol smtp
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#auto_from [(on|off)]
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#from envelope_from
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#maildomain [domain]
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auth on
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user $USRMAIL
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passwordeval "gpg -q --for-your-eyes-only --no-tty -d /root/msmtp-mail.gpg"
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#passwordeval "gpg --quiet --for-your-eyes-only --no-tty --decrypt /root/msmtp-mail.gpg"
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tls on
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tls_starttls on
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tls_trust_file /etc/ssl/certs/ca-certificates.crt
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#tls_crl_file /etc/ssl/certs/revoke.crl
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#tls_fingerprint [fingerprint]
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#tls_key_file [file]
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#tls_cert_file [file]
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tls_certcheck on
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tls_force_sslv3 on
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tls_min_dh_prime_bits 512
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#tls_priorities [priorities]
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#dsn_notify (off|condition)
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#dsn_return (off|amount)
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#domain argument
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#keepbcc off
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logfile /var/log/mail.log
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syslog on
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account default : gmail
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EOF
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chmod 0400 /root/.msmtprc
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## In testing .. auto command
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# echo -e "1\n4096\n\ny\n$MYUSRMAIL\n$MYEMAIL\nmy key\nO\n$PWDMAIL\n$PWDMAIL\n" | gpg --full-generate-key
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##
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gpg --full-generate-key
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gpg --output revoke.asc --gen-revoke $MYEMAIL
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echo -e "$PWDEMAIL\n" | gpg -e -o /root/msmtp-mail.gpg --recipient $MYEMAIL
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echo "export GPG_TTY=\$(tty)" >> .baschrc
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chmod 400 msmtp-mail.gpg
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echo "Hello there" | msmtp --debug $MYEMAIL
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echo"######################
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## MSMTP Configured ##
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######################"
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```
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DONE!! ;)
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([Table of Contents](#table-of-contents))
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### Gmail and Exim4 As MTA With Implicit TLS
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#### Why
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Reference in New Issue
Block a user