Local Mail Server with Roundcube (artemis.space)

This repository sets up a local mail server with SMTP, IMAP, and Roundcube webmail using Docker.
The mail server domain is artemis.space and is intended for local network or lab use.

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Components

• Mailserver: Uses docker-mailserver (Postfix + Dovecot)
• Webmail: Roundcube (webmail client)
• Docker: Services run as Docker containers managed with docker-compose

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Ports

Host Port	Service	Purpose	Notes
25	SMTP	Receiving emails from other mail servers	May be blocked by ISP/firewall
587	SMTP Submission	Sending emails with authentication	Use for authenticated email sending
143	IMAP	Mail retrieval (unencrypted)	Used by mail clients
993	IMAP (SSL/TLS)	Secure mail retrieval	Use for secure mail clients
8080	Roundcube Webmail UI	Access webmail in a browser	Default web UI port

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Setup & Usage

1. Edit your hosts file (on your Windows machine):

Add this line to C:\Windows\System32\drivers\etc\hosts (run editor as Administrator):

127.0.0.1 mail.artemis.space

2. Start the mail server:

docker-compose up -d

3. Create a mail user:

docker exec -it mailserver setup email add <user>@artemis.space <password>

4. Access Roundcube webmail:

Open a browser and navigate to:

http://mail.artemis.space:8080

Log in using your created email and password.