iRedMail

Overview

• Why build your own mail server instead of outsourcing to external entities
• Major open source softwares used in iRedMail, and big picture of mail flow
• Which network ports are open by iRedMail

Install iRedMail

• Install iRedMail on:

  • Red Hat Enterprise Linux, CentOS
  • Debian, Ubuntu
  • FreeBSD (without Jail), FreeBSD with Jail (ezjail)
  • OpenBSD

• After installtion:

  • Setup DNS records for your iRedMail server (A, PTR, MX, SPF, DKIM)

• Additional installation tips

  • Install iRedMail with a remote MySQL server
  • Perform silent/unattended iRedMail installation

• Performance tuning for a busy server

Configure mail client applications

POP3 service: port 110 over TLS (recommended), or port 995 with SSL.

IMAP service: port 143 over TLS (recommended), or port 993 with SSL.

SMTP service: port 587 over TLS.

• Exchange ActiveSync: Setup Android devices
• Exchange ActiveSync: Setup BlackBerry 10 devices
• Exchange ActiveSync: Setup iOS devices
• Exchange ActiveSync: Setup Outlook 2013 for Windows
• Setup Thunderbird: POP3/IMAP, SMTP and global ldap address book
• Mac OS X: Add contact service (CardDAV) in Contacts.app
• Mac OS X: Add calendar (CalDAV) and task (Reminders) service in iCalendar.app

Release notes and upgrade tutorials

• iRedMail release notes and upgrade tutorials
• iRedAdmin-Pro (web-based admin panel) release notes and upgrade tutorials
• iRedAPD (Postfix Access Policy Daemon) release notes and upgrade tutorials

Migrations

• Migrate old iRedMail server to the latest stable release
• Password hashes
• Migrate from Cluebringer to iRedAPD

How to

• Allow certain users to send email as another user
• Change mail attachment size
• Completely disable Amavisd + ClamAV + SpamAssassin
• Enable SMTPS service (SMTP over SSL, port 465)
• Disable spam virus scanning for outgoing mails
• Amavisd + SpamAssassin not working? no mail header (X-Spam-*) inserted
• Quarantine clean emails sent from/to certain local user
• Quarantining
• Sign DKIM signature on outgoing emails for new mail domain
• Allow insecure POP3/IMAP/SMTP connections without STARTTLS
• Allow member to send email as mailing list or mail alias
• Allow user to send email without smtp authentication
• Amavisd: Enable per-recipient policy lookup
• Whitelists and Blacklists
• Authenticate without domain part in email address
• Change server hostname
• Process more emails concurrently
• Disable greylisting in Cluebringer
• Dovecot Master User: Access user's mailbox without owner's password.
• Enable DNSBL service in Postfix to reduce spam
• Enable postscreen service
• Force mail user to change password in 90 days
• Ignore Trash folder in mailbox quota
• LDAP: Add an alias domain
• LDAP: Add per-domain catch-all account
• LDAP: Add a mail alias account
• LDAP: Add a mail list account
• LDAP: Bulk create mail users
• LDAP: User mail forwarding
• Mailbox sharing (Sharing IMAP folder with other users)
• Manage iRedAPD (white/blacklists, greylisting)
• Monitor incoming and outgoing mails with BCC
• Move detected spam to Junk folder
• Per-domain or per-user transport (relay)
• [DEPRECATED] Per-user outbound restrictions
• Pipe incoming email for certain user to external script
• How to create and manage public folder
• Force Dovecot to recalculate mailbox quota
• Reset user password
• Restrict mail user to login from specified IP addresses or networks
• Send out email from specified IP address
• SQL: Bulk create mail users
• SQL: Add per-domain catch-all account
• SQL: Add a mail alias account
• SQL: Mark existing mail user as global domain admin
• SQL: User mail forwarding
• Store SpamAssassin bayes in SQL
• Use a bought SSL certificate
• Use OpenLDAP as address book in Microsoft Outlook

Documents contributed by iRedMail users:

• Anti-spam with Dovecot antispam plugin and SpamAssassin, contributed by Dexus.

Third-party integrations

Below tutorials are maintained by iRedMail project.

• Integrate Microsoft Active Directory in iRedMail

• Install SOGo groupware on:

  • CentOS 6: MySQL, OpenLDAP.

Documents contributed by iRedMail users:

• Enabling Apache Solr 4.10 (using jetty) with Dovecot 2.2 for fulltext search results on Centos 6 (iRedMail compatible)
• Install iRedMail and Mailman on Debian Squeeze. Howtoforge tutorial, contributed by Jason Norwood-Young.
• Integrate DBMail in iRedMail (MySQL backend), CentOS
• High-Availability Maildir Storage With GlusterFS + CentOS 5.x, contributed by Basem Hegazy. 2011-06-26
• Integrate OpenVPN in iRedMail with OpenLDAP, Howtoforge tutorial.
• Integrate Ejabberd in iRedMail with OpenLDAP
• Virtual Mail And FTP Hosting With iRedMail And Pure-FTPd

Cluster

Documents contributed by iRedMail users:

• An Ultra-HA, full Mult-Master E-mail cluster with iRedMail, MariaDB, and IPVS, contributed by Joshua Boniface.

Troubleshooting and Debug

• Turn on debug mode in Amavisd and SpamAssassin
• Turn on debug mode in Cluebringer
• Turn on debug mode in Dovecot
• Turn on debug mode in iRedAPD
• Log executed SQL commands in MySQL/MariaDB
• Turn on debug mode in OpenLDAP
• Turn on debug mode in Roundcube webmail

Frequently Asked Questions

• Errors you may see while maintaining iRedMail server
• Why append timestamp in maildir path
• iRedAdmin-Pro: Default password restrictions
• iRedAdmin-Pro: Enable self-service to allow users to manage their own preferences and more
• iRedAdmin-Pro: Translate iRedAdmin to your local language
• Explanation of Amavisd SQL database
• Backup and restore
• Customize maildir path
• Locations of configuration and log files of major components

All documents are available in BitBucket repository, and published under Creative Commons license. If you found something wrong, please do contact us to fix it.