This tool provides a Node.js SMTP Server that dumps all mails to disk. It can be used to test SMTP Clients or simulate SMTP Servers for Development reasons.
git clone https://github.com/snsttr/smtp-dump.git
cd smtp-dump
npm install
node smtp-dump.js
smtp-dump.js will write out all E-Mails into the default output folder ./output while running. The E-Mail will not be
send to the destination Mail Server.
The SMTP Server does not require a username and/or a password. Also secure connections are not possible, yet.
Specify the logging destination by passing a path to --output (default directory is output).
Creates the directory if it does not exist.
node smtp-dump.js --output=dump
node smtp-dump.js --output=/home/smtp-dump
node smtp-dump.js --output=C:\smtp-dump
Specify the port for the SMTP Server by passing a number (1 - 65536) to --port (default Port is 25)
node smtp-dump.js --port=10025
Debugging ouput (console) is enabled if you use --logger (default is disabled).
node smtp-dump.js --logger
Start smtp-dump.js with output directory ./dump, port 10025 and logging activated.
node smtp-dump.js --output=dump --port=10025 --logger
Now enter the settings to your SMTP Server in your SMTP Client Application (usually on localhost). As soon as the client
tries to send an E-Mail using the specified SMTP Server the smtp-dump.js writes the Mail as a txt-File into the specified
output directory:
Message-ID: <[email protected]>
Date: Thu, 29 Dec 2016 15:54:13 +0100
Subject: Test E-Mail
From: Test Client <[email protected]>
To: [email protected]
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
This is a Test Message
Since we used --logger the smtp-dump.js outputs some information to the command line:
[2017-02-16 14:34:54] INFO: SMTP Server listening on [::]:10025
[2017-02-16 14:35:46] INFO: [82Suh8w7238+O] Connection from [127.0.0.1]
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 220 localhost ESMTP
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: EHLO example.com
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250-localhost Nice to meet you, [127.0.0.1]
250-PIPELINING
250-8BITMIME
250-SMTPUTF8
250-AUTH LOGIN PLAIN
250 STARTTLS
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: MAIL FROM: <[email protected]>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250 Accepted
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: RCPT TO: <[email protected]>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250 Accepted
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: DATA
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 354 End data with <CR><LF>.<CR><LF>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: <701 bytes of DATA>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250 OK: message queued
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: MAIL FROM: <[email protected]>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250 Accepted
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: RCPT TO: <[email protected]>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250 Accepted
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: DATA
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 354 End data with <CR><LF>.<CR><LF>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: <706 bytes of DATA>
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 250 OK: message queued
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] C: QUIT
[2017-02-16 14:35:46] DEBUG: [82Suh8w7238+O] S: 221 Bye
[2017-02-16 14:35:46] INFO: [82Suh8w7238+O] Connection closed to [127.0.0.1]