Fast Deployment and Unlimited Accounts

  • Deploy full-featured mail server in LESS THAN 1 MINUTE. (View YouTube Video to check how easy it is)
  • Unlimited number of mail domains
  • Unlimited number of mail users
  • Unlimited number of mail lists
  • Unlimited number of mail aliases

Supported Distributions & Arch (Contact us if you need mail server on other distributions)

Distribution Version i386 x86_64
Red Hat Enterprise Linux 5.x
CentOS 5.x
Debian 5.x
Ubuntu 8.04, 9.04, 9.10
FreeBSD 7.x, 8.x

Supported Backends which used to store virtual mail domains & users

Backend Web-based Admin Tool Build-in Mail List Build-in Global LDAP Address Book
OpenLDAP-2.3.x/2.4.x iRedAdmin, phpLDAPadmin
MySQL-5.x phpMyAdmin, PostfixAdmin

Service Restrictions

Service Per-user support Per-domain support
Mail service
Sender BCC
Recipient BCC
Sending mail via SMTP
Fetching mail via POP3
Fetching mail via POP3S (POP3 over TLS/SSL)
Fetching mail via IMAP
Fetching mail via IMAPS (IMAP over TLS/SSL)
Receiving mail
Mail forwarding
Customize mail filter rule
Note:
  • Mail service means all mail related services, include POP3, IMAP, SMTP and other services listed above.
  • Domain BCC setting will override per-user BCC setings.

Global LDAP Address Book Control (Show account mail address in per-domain ldap address book)

Per-user support Per-mail-list support Per-alias support

Anti-Spam & Anti-Virus

  • SPF (Sender Policy Framework) Validation support.
  • DKIM (DomainKeys Identified Mail) signing and verification support.
  • Greylist support.
  • Whitelist support. Based on both DNS name and IP address.
  • Blacklist support. Based on both DNS name and IP address.
  • Blacklist HELO support.
  • HELO Randomization Prevention (HRP) support.
  • Spamtrap support.
  • SpamAssassin integration.
  • ClamAV integration for anti-virus, auto-update virus database.

Sender & Recipient Throttling

WebMail

Program Vacation Support Global LDAP Address Book Support Mail filter Support
Roundcube WebMail

Supported Mail Clients

All mail clients which support POP3/POP3S, IMAP/IMAPS. Such as Thunderbird, Outlook, etc.

Main components and working process

Image comes from: http://workaround.org/ispmail/lenny/bigpicture