cat << EOF | sendmail -t
Sender: no-reply@chorke.org.bd
From: Sender <from@chorke.org.bd>
Reply-To: Sender <from@chorke.org.bd>
To: To <to@chorke.org.bd>
CC: Cc <cc@chorke.org.bd>
Disposition-Notification-To: to@chorke.org.bd
Subject: Generic Subject
Generic Body
EOF
Python smtplib
export ENV_EMAIL_SUBJECT='Subject for Debug Email';\
export ENV_EMAIL_SENDER='no-reply@chorke.org.bd';\
export ENV_EMAIL_FROM='no-reply@chorke.org.bd';\
export ENV_EMAIL_BODY='Body for Debug Email';\
export ENV_EMAIL_TO='academia@chorke.org.bd';\
\
export ENV_SMTP_USER='no-reply@chorke.org.bd';\
export ENV_SMTP_HOST='smtp.chorke.org.bd';\
export ENV_SMTP_PASS='p@$$w0rd';\
export ENV_SMTP_PORT='587';\
export ENV_SMTP_DBUG='1';\
export ENV_SMTP_TTLS='1';\
(curl -s 'https://cdn.chorke.org/exec/cli/python/finology/commons/sendmail.py.txt')|python
Knowledge
/usr/sbin/sendmail -Am -v -t < filename.eml
/usr/sbin/sendmail -v -t < filename.eml
/usr/sbin/sendmail -t < filename.eml
launch interpreter by magic header or env
1. Python 3.9: #!/usr/bin/env python3.9
2. Python 2.6: #!/usr/bin/env python2.6
3. TS Node : #!/usr/bin/env ts-node
4. Python : #!/usr/bin/env python
5. NodeJS : #!/usr/bin/env node
6. Ruby : #!/usr/bin/env ruby
7. Perl : #!/usr/bin/env perl
8. PHP : #!/usr/bin/env php
9. GO : #!/usr/bin/env go run
#resolve mail server
nslookup
: '
Default Server: www0.dev.chorke.org
Address: 10.20.13.100
> set type=mx
> chorke.org
Server: www0.dev.chorke.org
Address: 10.20.13.100
Non-authoritative answer:
chorke.org MX preference = 0, mail exchanger = mail.chorke.org
> exit
'
References