ISMail Key Features:

  • Unlimited Accounts
  • Unlimited Domains
  • ESMTP, POP3, IMAP4 servers
  • Account Quotas
  • Anti-Spam Filters
  • Anti-Virus Scanner Support
  • Autoresponders
  • Mail Groups / Forwarding
  • SMTP Authentication
  • Webmail (plugin)
  • Windows Administration GUI
  • Works with any mail client (e.g. Outlook, Eudora)
  • Works with web-based mail services

Detailed List of Features:

  • Account Disable: disable sending from an account, while still allowing 'read' access
  • Account Forwarding: redirect or forward messages to one or more email address Optionally keep a copy of messages in the account being forwarded.
  • Account Quotas: define optional limit to mailbox size. Can be defined for entire system, per domain, and/or per account.
  • Account Unknown: account 'nobody' will accept messages to unknown accounts on a domain. Messages can be stored in this account or forwarded to any email address.
  • Anti-Spam Filters: 6 levels of defense against spam (Blocked IPs, Blacklists, Reverse DNS Checking, Real-time Blackhole (RBL) Lists, Greylists, built-in and custom content filters). Actions on detecting a spam message include deleting, forwarding, or marking a header in the message. The Whitelist, Blacklist, and content filters are configurable at the global, domain, or account-level.
  • Anti-Virus Scanner: anti-virus mail scanning program can be run on each message and attachments being sent and received.
  • Authentication: controls access to ISMail (types of Authentication include: Login, Trusted IPs, and SMTP Authentication).
  • Autoresponders: each account can automatically send a response when a message is received.
  • Blackhole List: can check optional internet service for IP addresses to be denied mail access.
  • Blacklist / Whitelist: messages from specific IP addresses, domains, or email accounts may be blocked ('blacklisted') or accepted unconditionally ('whitelisted').
  • Configuration Checker: on-line tool checks network and mail server configuration.
  • DNS Auto-configuration: automatically chooses two (2) internet 'root' DNS servers if the actual DNS servers are not known.
  • Email Client Compatibility: works with all major email programs (e.g. Netscape Messenger, Eudora, Microsoft Outlook Express).
  • Encryption: POP3 and IMAP4 servers support CRAM-MD5 encrypted logins.
  • Firewall/Router/Proxy Server Compatible: works with major firewalls, routers, and proxy servers.
  • Greylist: temporary delay messages from unknown senders; protects against 'hit-and-run' spam (see http://projects.puremagic.com/greylisting/).
  • IP-based Addresses: mail may be sent or received using IP addresses (e.g. 'user@[1.2.3.4]' send mail to the IP '1.2.3.4').
  • IP-based Domains: one or more domains may be set to use specific IP addresses (on machines with multiple IPs).
  • IP Blocking: deny connections for one or more IP addresses.
  • Logging: mail and content filter transactions are logged. User control over logging detail.
  • Login Authentication: a POP3/IMAP4 account login can be used for Authentication.
  • Mail Groups: use account forwarding to define groups (or lists) of mail accounts which will receive copies of messages sent to group account names
  • Message Delivery Delay: sender is notified if message has not been delivered after 1 day.
  • Message Bounce: sender is notified if message can not be delivered after 7 days.
  • Message Loop: checks messages for internal mail 'loops' before sending.
  • Multiple Domains: one or more domain names can be used. Each domain has unique mail accounts.
  • Multithreaded Operation: simultaneous message I/O for improved performance.
  • Open Relay List: can check optional internet service for IP addresses to be denied mail access.
  • Open Relay Protection: Authentication must be provided before sending mail.
  • Real-time Blackhole List (RBL): checks internet services for IP addresses to be blocked due to a history of sending spam.
  • Reverse DNS Check: verify that sender has reverse DNS entry. Helps protect against invalid senders. messages and handle ETRN commands.
  • SmartHost: send messages directly to another mail server. Avoids dynamic IP, firewall, and port blocking issues. SmartHost port may optionally be specified (default: port 25).
  • SMTP Authentication: supports PLAIN, LOGIN, NTLM, and/or CRAM-MD5 authentication methods with SMTP and SASL.
  • Static or Dynamic IP Address: ISMail is domain name-based. It works over internet connections which use either a static or a dynamic IP address. Note: support from a dynamic DNS is required for dynamic IP addresses.
  • Statistics: real-time statistics are kept for major SMTP server subsystems.
  • Security: multiple types and levels of security control guard against attack and unauthorized access.
  • Trusted IPs: one or more 'trusted' IP addresses may be used for Authentication.
  • Virtual Domains: more than one domain can share the same server IP address.
  • Web-based Mail Service Compatibility: works with web-based mail services
  • Webmail: access mail with a web browser using an optional ISMail plugin
  • Windows Services: run mail servers as Windows Services on NT/2000/XP