ISMail EP Features

• Unlimited Accounts
• Unlimited Domains
• ESMTP, POP3, IMAP4, Webmail, and LDAP servers
• Secure 256-bit SSL/TLS encryption
• Account Quotas
• Anti-Spam Protection
• Anti-Virus Scanner Support
• Archival
• Autoresponders
• Backup/Restore
• IP-based and 'virtual' Domains
• IMAP Access Control Lists (ACLs)
• LDAP
• List Server / Mailing Lists
• Mail Groups / Forwarding
• ODBC
• Performance
• Port Control
• Public / Shared Folders
• Real-time Server Monitor
• Relay (ETRN)
• Remote POP3 Download
• Security
• SMTP Authentication
• Webmail
• Web-based Mail Server Management
• Web-based Mail Domain Management
• Web-based User Account Management
• Web-based User Auto-account Creation
• Windows Administration GUI
• Works with any mail client (e.g. Outlook, Eudora)
• Works with web-based mail services (e.g. Mail2Web)

Detailed List of Features:

• Account Disable: disable sending, while still allowing account 'read' access.
• Account Forwarding: redirect or forward messages to one or more email addresses. Optionally keep a copy of messages in the account being forwarded.
• Account Quotas: limit mailbox sizes. Define 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. (If 'nobody' does not exist, messages to unknown accounts are refused).
• Anti-spam Protection: 7 levels of defense against spam (Blocked IPs, Blacklists, Reverse DNS Checking, Real-time Blackhole (RBL) Lists, Greylists, Heuristic filter, 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: runs any command-line anti-virus scanner on all messages (incoming and outgoing).
• Archival: archive all messages sent or received for auditing and corporate accountability.
• 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.
• Backup/Restore: scheduled backups for system configuration, domain-level, and user account messages. Full and partial backup and restore supported.
• Blacklist / Whitelist: messages from specific IP addresses, domains, or email accounts may be blocked ('blacklisted') or accepted unconditionally ('whitelisted').
• Connections (incoming): limit total number of incoming connections and number of incoming connections from a single IP address.
• Connections (outgoing): adjust maximum number of simultaneous outgoing connections.
• Configuration Checker: on-line tool checks network port accessibility (through a router) 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/).
• IMAP Access Control Lists (ACLs): mailbox sharing for each account and mailbox may be enabled with specific rights.
• 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 send using specific IP addresses (on machines with multiple IPs). Server may also be set to receive using specific IP addresses.
• IP Blocking: deny connections for one or more IP addresses.
• List Server: automated list server with email-based subscribe and unsubscribe, member-only posting, subject line tagging, and member import functions.
• LDAP: use LDAP for account database, or for remote account verification with Relays.
• 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
• Maximum Message Size: limit maximum size of messages.
• 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.
• ODBC: use ODBC for account database, or for remote account verification with Relays.
• Open Relay List (ORL): checks internet services for IP addresses to be blocked as a result of operating as open relays.
• Open Relay Protection: Authentication must be provided before sending mail.
• Port Control: incoming and outgoing ports may be defined.
• Public / Shared Folders: IMAP public and shared folders may be accessed by designated accounts (see IMAP ACLs).
• Real-time Blackhole List (RBL): checks internet services for IP addresses to be blocked due to a history of sending spam.
• Real-time Server Monitor: continuous window display of mail server activity.
• Relay (ETRN): act as a backup ('secondary') for one or more mail servers, or use other mail servers as backups for this server ('primary'). Automatically forward messages and handle ETRN commands. Use LDAP or ODBC for remote account verification.
• Remote POP3 Download: download from mail accounts on any POP3 server and route messages.
• Reverse DNS Check: verify that sender has reverse DNS entry. Helps protect against invalid senders.
• Secure 256-bit SSL encryption: use SSL for secure message data transfer.
• SmartHost: send messages directly to another mail server. Avoids dynamic IP, 'reverse DNS lookup', firewall, and port blocking issues. SmartHost may be used for all messages, or only when message delivery fails. SMTP Authentication may be used with SmartHost. 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; performance on a dynamic IP may vary.
• 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 (e.g. Mail2Web)
• Web-based Mail Server Management: remote administration of mail servers and configuration for system administrators
• Web-based Mail Domain Management: remote management of each domain's configuration using domain administrators
• Web-based User Account Management: remote access to user account configuration (including user content filters) for each user account
• Web-based User Auto-account Creation: web form allows users to create new mail accounts
• Webmail: access mail with a web browser using free ISMail plugin
• Windows Services: run mail servers as Windows Services on NT/2000/XP/2003