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Add test-smtp-connection script

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Christopher
2023-10-06 21:44:02 -05:00
parent 957f001708
commit 3d8175dd25
2 changed files with 61 additions and 0 deletions
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test-smtp-connection/README.md Normal file
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# Test SMTP Connection
```bash
bash -c "$(wget -qLO - https://raw.githubusercontent.com/bigbeartechworld/big-bear-scripts/master/test-smtp-connection/run.sh)"
```

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test-smtp-connection/run.sh Normal file
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#!/bin/bash
# This script sends an email using the telnet command.
# The email details can be provided interactively or default values will be used.
# Set default values for the SMTP server details and email content.
DEFAULT_SMTP_SERVER="smtp.server.com"
DEFAULT_SMTP_PORT="1025"
DEFAULT_SENDER="sender@example.com"
DEFAULT_RECIPIENT="recipient@example.com"
DEFAULT_SUBJECT="Default HTML Email"
DEFAULT_MESSAGE="<html><body><h1>Hello, World!</h1><p>This is a default test message in <strong>HTML</strong>.</p></body></html>"
# Prompt the user to enter the SMTP server details and email content.
# If the user doesn't provide any input, default values will be used.
read -p "Enter SMTP Server [$DEFAULT_SMTP_SERVER]: " SMTP_SERVER
SMTP_SERVER="${SMTP_SERVER:-$DEFAULT_SMTP_SERVER}"
read -p "Enter SMTP Port [$DEFAULT_SMTP_PORT]: " SMTP_PORT
SMTP_PORT="${SMTP_PORT:-$DEFAULT_SMTP_PORT}"
read -p "Enter Sender Email [$DEFAULT_SENDER]: " SENDER
SENDER="${SENDER:-$DEFAULT_SENDER}"
read -p "Enter Recipient Email [$DEFAULT_RECIPIENT]: " RECIPIENT
RECIPIENT="${RECIPIENT:-$DEFAULT_RECIPIENT}"
read -p "Enter Email Subject [$DEFAULT_SUBJECT]: " SUBJECT
SUBJECT="${SUBJECT:-$DEFAULT_SUBJECT}"
read -p "Enter Message Body (HTML) [$DEFAULT_MESSAGE]: " MESSAGE
MESSAGE="${MESSAGE:-$DEFAULT_MESSAGE}"
# Send the email using the telnet command.
# This section creates a sequence of SMTP commands to be piped into the telnet command.
# Each command is followed by a sleep to ensure that the SMTP server has time to process it.
{
sleep 2
echo "EHLO localhost" # Start the SMTP handshake.
sleep 2
echo "MAIL FROM:<$SENDER>" # Specify the sender.
sleep 2
echo "RCPT TO:<$RECIPIENT>" # Specify the recipient.
sleep 2
echo "DATA" # Start the data section of the email.
sleep 2
echo "Subject: $SUBJECT" # Add the subject.
echo "Content-Type: text/html; charset=utf-8" # Specify that the email content is HTML.
echo "" # Empty line to separate headers from the body.
echo "$MESSAGE" # Add the email body.
echo "." # End the data section.
sleep 2
echo "QUIT" # Quit the SMTP session.
} | telnet $SMTP_SERVER $SMTP_PORT # Pipe the SMTP commands into the telnet command.